CA1211360A - Dispositif d'attenuation d'energie acoustique et methode de fabrication - Google Patents
Dispositif d'attenuation d'energie acoustique et methode de fabricationInfo
- Publication number
- CA1211360A CA1211360A CA000428437A CA428437A CA1211360A CA 1211360 A CA1211360 A CA 1211360A CA 000428437 A CA000428437 A CA 000428437A CA 428437 A CA428437 A CA 428437A CA 1211360 A CA1211360 A CA 1211360A
- Authority
- CA
- Canada
- Prior art keywords
- layer
- apertured
- apertures
- panel
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 4
- 239000000805 composite resin Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 6
- 239000012792 core layer Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 10
- 230000001413 cellular effect Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 239000004677 Nylon Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000013521 mastic Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004763 nomex Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
- B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
- B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
- B29K2105/0809—Fabrics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/20—Inserts
- B29K2105/206—Meshes, lattices or nets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/026—Porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8214612 | 1982-05-19 | ||
| GB8214612 | 1982-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1211360A true CA1211360A (fr) | 1986-09-16 |
Family
ID=10530466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000428437A Expired CA1211360A (fr) | 1982-05-19 | 1983-05-18 | Dispositif d'attenuation d'energie acoustique et methode de fabrication |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS58209791A (fr) |
| CA (1) | CA1211360A (fr) |
| DE (1) | DE3318334C2 (fr) |
| FR (1) | FR2527367B1 (fr) |
| GB (1) | GB2122540B (fr) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8817669D0 (en) * | 1988-07-25 | 1988-09-01 | Short Brothers Ltd | Means for attenuating sound energy |
| GB9101353D0 (en) * | 1991-01-22 | 1991-03-06 | Short Brothers Plc | Noise attenuation panel |
| FR2735064B1 (fr) * | 1995-06-09 | 1997-08-29 | Aerospatiale | Procede de fabrication d'une peau microporeuse en materiau composite |
| GB9909581D0 (en) | 1999-04-26 | 1999-06-23 | Short Brothers Plc | Noise attenuation panel |
| FR2803077B1 (fr) * | 1999-12-24 | 2002-07-26 | Aerospatiale Matra Airbus | Procede de realisation d'une couche acoustiquement resistive, couche resistive obtenue et paroi utilisant une telle couche |
| FR2803078B1 (fr) * | 1999-12-24 | 2002-07-26 | Aerospatiale Matra Airbus | Panneau d'attenuation acoustique a couche resistive a propriete structurale et son procede d'obtention |
| US6509081B1 (en) * | 2000-09-28 | 2003-01-21 | The Boeing Company | No-septum acoustic sandwich panel, and apparatus and method for suppressing noise in a nozzle |
| ITMI20010078A1 (it) * | 2001-01-17 | 2002-07-17 | Aermacchi S P A | Pannello acustico a struttura composita migliorato |
| FR2826168B1 (fr) * | 2001-06-19 | 2003-12-05 | Eads Airbus Sa | Procede de realisation d'une couche acoustiquement resistive renforcee, couche resistive ainsi obtenue et panneau utilisant une telle couche |
| US8133568B2 (en) | 2005-08-22 | 2012-03-13 | Owens Corning Intellectual Capital, Llc | Die cut insulation blanket |
| US7923092B2 (en) | 2005-08-22 | 2011-04-12 | Owens Corning Intellectual Capital, Llc | Die cut insulation blanket and method for producing same |
| DE102006023294A1 (de) * | 2006-05-18 | 2007-11-22 | Airbus Deutschland Gmbh | Verbundplatte und Verfahren zum Drainieren einer Verbundplatte |
| FR2912833B1 (fr) * | 2007-02-20 | 2009-08-21 | Airbus France Sas | Panneau pour le traitement acoustique |
| CN102144255A (zh) | 2008-08-04 | 2011-08-03 | 欧文斯科宁知识产权资产有限公司 | 用于电气设备比如洗碗机的隔离元件 |
| US8820477B1 (en) | 2013-07-29 | 2014-09-02 | The Boeing Company | Acoustic panel |
| US9643392B2 (en) | 2013-07-29 | 2017-05-09 | The Boeing Company | Septumization of honeycomb sandwiches |
| US9693166B2 (en) | 2014-06-24 | 2017-06-27 | The Boeing Company | Automated production of acoustic structures |
| US9931825B2 (en) | 2014-07-09 | 2018-04-03 | The Boeing Company | Septumization of cellular cores |
| DE102014215587A1 (de) * | 2014-08-06 | 2016-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Verbundwerkstoff und daraus hergestellte Bauteile für ein Kraftfahrzeug |
| GB2531808A (en) | 2014-11-03 | 2016-05-04 | Short Brothers Plc | Methods and precursors for manufacturing a perforated composite part |
| FR3049651B1 (fr) * | 2016-04-04 | 2019-06-21 | Airbus Operations | Panneau acoustique pour nacelle d'aeronef et procede de fabrication du panneau acoustique. |
| FR3061347A1 (fr) * | 2016-12-23 | 2018-06-29 | Airbus Operations | Procede d'obtention d'une couche acoustique poreuse et couche acoustique poreuse ainsi obtenue |
| US11498306B2 (en) * | 2017-06-07 | 2022-11-15 | Ihi Corporation | Sound-absorbing panel and manufacturing method for same |
| US11123948B2 (en) * | 2018-11-13 | 2021-09-21 | Epic Aircraft, LLC | Method for forming a composite structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1237397A (en) * | 1966-04-06 | 1971-06-30 | Dunlop Holdings Ltd | Flexible sheet material |
| GB1274871A (en) * | 1969-01-24 | 1972-05-17 | Rolls Royce | Sound absorptive material |
| BE792077A (fr) * | 1971-11-29 | 1973-03-16 | Ici Australia Ltd | |
| GB2056367B (en) * | 1979-07-06 | 1983-06-02 | Rohr Industries Inc | Process for producing noise attenuation panels |
| DE2930123A1 (de) * | 1979-07-25 | 1981-02-12 | Wilhelmi Holzwerk | Schallschluckende bauplatte |
| FR2480741A1 (fr) * | 1980-04-18 | 1981-10-23 | Aerospatiale | Couche poreuse pour structure composite destinee a l'absorption d'energie sonore et son procede de fabrication |
-
1983
- 1983-05-18 JP JP58085998A patent/JPS58209791A/ja active Granted
- 1983-05-18 CA CA000428437A patent/CA1211360A/fr not_active Expired
- 1983-05-19 GB GB08313848A patent/GB2122540B/en not_active Expired
- 1983-05-19 DE DE3318334A patent/DE3318334C2/de not_active Expired - Fee Related
- 1983-05-19 FR FR8308315A patent/FR2527367B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2122540A (en) | 1984-01-18 |
| JPH0449713B2 (fr) | 1992-08-12 |
| GB2122540B (en) | 1986-04-23 |
| FR2527367B1 (fr) | 1986-12-05 |
| GB8313848D0 (en) | 1983-06-22 |
| FR2527367A1 (fr) | 1983-11-25 |
| DE3318334C2 (de) | 1995-05-04 |
| DE3318334A1 (de) | 1983-11-24 |
| JPS58209791A (ja) | 1983-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |