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ES436722A1 - Surgical dressing - Google Patents

Surgical dressing

Info

Publication number
ES436722A1
ES436722A1 ES436722A ES436722A ES436722A1 ES 436722 A1 ES436722 A1 ES 436722A1 ES 436722 A ES436722 A ES 436722A ES 436722 A ES436722 A ES 436722A ES 436722 A1 ES436722 A1 ES 436722A1
Authority
ES
Spain
Prior art keywords
tissue
knit
days
wound dressing
fibres
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
Application number
ES436722A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US462471A external-priority patent/US3896802A/en
Priority claimed from US462490A external-priority patent/US3903882A/en
Application filed by American Cyanamid Co filed Critical American Cyanamid Co
Publication of ES436722A1 publication Critical patent/ES436722A1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01034—Non-adhesive bandages or dressings characterised by a property
    • A61F13/01046—Air-vapor permeability
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51121—Topsheet, i.e. the permeable cover or layer facing the skin characterised by the material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/06—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings
    • A61F13/064—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for feet
    • A61F13/069—Decubitus ulcer bandages
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/551—Packaging before or after use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00157—Wound bandages for burns or skin transplants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00217—Wound bandages not adhering to the wound
    • A61F2013/00221—Wound bandages not adhering to the wound biodegradable, non-irritating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00238—Wound bandages characterised by way of knitting or weaving
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/00246—Wound bandages in a special way pervious to air or vapours
    • A61F2013/00263—Wound bandages in a special way pervious to air or vapours vapour permeability >500 g/m2/24h
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00519—Plasters use for treating burn
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00855—Plasters pervious to air or vapours
    • A61F2013/00876—Plasters pervious to air or vapours vapour permeability >500 g/mg/24h
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers of the pads
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
    • A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
    • A61F2013/51411—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being impervious to fluids but not for air or vapours
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530992—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium in the form of string or ball instead of sheets

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hematology (AREA)
  • Materials Engineering (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The wound dressing consists of an elastomeric layer to which is bonded a knit or a layer of flock fibres. The knit or the fibres is or are made of a tissue-compatible material which a) is essentially absorbed by the living tissue within 90 days, b) retains its integrity for at least 10 days, c) has a surface with interspaces into which the granulation tissue can grow, but can be easily removed from the wound without removing the granulation tissue bed, and d) is composed of a polymer comprising hydrolytically degradable polyglycolic ester. The wound dressing is suitable for humans or mammalian animals with partially destroyed skin for preventing moisture losses and bacterial contamination. It adapts to the tissue surface with minimal formation of fluid or air accumulations that cause infection problems. Its water vapour permeability is comparable to that of the intact human skin.
ES436722A 1974-04-19 1975-04-18 Surgical dressing Expired ES436722A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US462471A US3896802A (en) 1974-04-19 1974-04-19 Flexible flocked dressing
US462490A US3903882A (en) 1974-04-19 1974-04-19 Composite dressing

Publications (1)

Publication Number Publication Date
ES436722A1 true ES436722A1 (en) 1977-05-01

Family

ID=27040351

Family Applications (1)

Application Number Title Priority Date Filing Date
ES436722A Expired ES436722A1 (en) 1974-04-19 1975-04-18 Surgical dressing

Country Status (22)

Country Link
JP (1) JPS50146181A (en)
AR (1) AR202169A1 (en)
AT (1) AT342214B (en)
AU (1) AU498891B2 (en)
BR (1) BR7502272A (en)
CH (1) CH614123A5 (en)
CS (1) CS180037B2 (en)
DD (1) DD119713A5 (en)
DE (1) DE2515865A1 (en)
DK (1) DK168075A (en)
ES (1) ES436722A1 (en)
FR (1) FR2267748B1 (en)
GB (1) GB1476894A (en)
HU (1) HU168722B (en)
IE (1) IE40914B1 (en)
IL (2) IL46797A (en)
IT (1) IT1050286B (en)
NL (1) NL7504655A (en)
PL (1) PL101312B1 (en)
RO (1) RO70493A (en)
SE (1) SE411298B (en)
YU (1) YU98175A (en)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1562244A (en) * 1976-11-11 1980-03-05 Lock P M Wound dressing materials
ZA777281B (en) * 1977-02-14 1978-10-25 American Cyanamid Co Method for preparing compacted polyglycolic acid felt
NZ197782A (en) 1980-07-30 1985-07-31 Smith & Nephew Ass A moisture vapour transmitting elastic bandage
US4706662A (en) * 1981-12-11 1987-11-17 Johnson & Johnson Products, Inc. Film dressing with fabric backing
NL8202894A (en) * 1982-07-16 1984-02-16 Rijksuniversiteit POLYESTER FILAMENT MATERIAL.
NL8202893A (en) * 1982-07-16 1984-02-16 Rijksuniversiteit ORGANIC Tolerant, ANTHITHROMBOGENIC MATERIAL, SUITABLE FOR RECOVERY SURGERY.
US4880690A (en) * 1984-11-13 1989-11-14 Thermedics, Inc. Perfume patch
US4727868A (en) * 1984-11-13 1988-03-01 Thermedics, Inc. Anisotropic wound dressing
US4751133A (en) * 1984-11-13 1988-06-14 Thermedics, Inc. Medical patches and processes for producing same
JPS61249474A (en) * 1985-04-25 1986-11-06 サ−メデイクス　インコ−ポレイテド Anisotropic medical container
GB2192142B (en) * 1986-07-04 1990-11-28 Johnson & Johnson Wound dressing
GB0606661D0 (en) 2006-04-03 2006-05-10 Brightwake Ltd Improvements relating to dressings
GB2493960B (en) 2011-08-25 2013-09-18 Brightwake Ltd Non-adherent wound dressing
US11717447B2 (en) 2016-05-13 2023-08-08 Smith & Nephew Plc Sensor enabled wound monitoring and therapy apparatus
US11690570B2 (en) 2017-03-09 2023-07-04 Smith & Nephew Plc Wound dressing, patch member and method of sensing one or more wound parameters
US11324424B2 (en) 2017-03-09 2022-05-10 Smith & Nephew Plc Apparatus and method for imaging blood in a target region of tissue
JP7091356B2 (en) 2017-03-09 2022-06-27 スミス アンド ネフュー ピーエルシー Devices, devices, and methods for determining skin perfusion pressure
EP3609449A1 (en) 2017-04-11 2020-02-19 Smith & Nephew PLC Component positioning and stress relief for sensor enabled wound dressings
EP3635733A1 (en) 2017-05-15 2020-04-15 Smith & Nephew plc Negative pressure wound therapy system using eulerian video magnification
CN110832598B (en) 2017-05-15 2024-03-15 史密夫及内修公开有限公司 Wound analysis devices and methods
GB201809007D0 (en) 2018-06-01 2018-07-18 Smith & Nephew Restriction of sensor-monitored region for sensor-enabled wound dressings
JP7511468B2 (en) 2017-08-10 2024-07-05 スミス アンド ネフュー ピーエルシー Sensor Placement for Sensor-Enabled Wound Monitoring or Treatment
GB201718870D0 (en) 2017-11-15 2017-12-27 Smith & Nephew Inc Sensor enabled wound therapy dressings and systems
EP3681376A1 (en) 2017-09-10 2020-07-22 Smith & Nephew PLC Systems and methods for inspection of encapsulation and components in sensor equipped wound dressings
GB201804971D0 (en) 2018-03-28 2018-05-09 Smith & Nephew Electrostatic discharge protection for sensors in wound therapy
GB201718859D0 (en) 2017-11-15 2017-12-27 Smith & Nephew Sensor positioning for sensor enabled wound therapy dressings and systems
WO2019072531A1 (en) 2017-09-28 2019-04-18 Smith & Nephew Plc Neurostimulation and monitoring using sensor enabled wound monitoring and therapy apparatus
GB201718851D0 (en) * 2017-11-15 2017-12-27 Smith & Nephew Flocked conformable circuit boards for sensor enabled wound therapy dressings and systems
GB201814011D0 (en) 2018-08-29 2018-10-10 Smith & Nephew Componet positioning and encapsulation for sensor enabled wound dressings
GB2592508B (en) 2018-09-12 2022-08-31 Smith & Nephew Device, apparatus and method of determining skin perfusion pressure
GB201820927D0 (en) 2018-12-21 2019-02-06 Smith & Nephew Wound therapy systems and methods with supercapacitors
GB2611914B (en) 2019-01-30 2023-09-20 Smith & Nephew Sensor integrated dressings and systems
GB2616370B (en) 2019-03-18 2023-12-06 Smith & Nephew Design rules for sensor integrated substrates
US12478279B2 (en) 2019-03-19 2025-11-25 Smith & Nephew Plc Systems and methods for measuring tissue impedance
GB202003203D0 (en) 2020-03-05 2020-04-22 Smith & Nephew Sensor integrated dressings and systems
GB202007391D0 (en) 2020-05-19 2020-07-01 Smith & Nephew Patient protection from unsafe electric current in sensor integrated dressings and systems
JP7691826B2 (en) * 2021-02-18 2025-06-12 グンゼ株式会社 Tissue reinforcement material

Also Published As

Publication number Publication date
AR202169A1 (en) 1975-05-15
DD119713A5 (en) 1976-05-12
IL46795A0 (en) 1975-05-22
IT1050286B (en) 1981-03-10
DK168075A (en) 1975-10-20
YU98175A (en) 1982-05-31
HU168722B (en) 1976-07-28
RO70493A (en) 1981-07-30
SE7504547L (en) 1975-12-23
NL7504655A (en) 1975-10-21
CS180037B2 (en) 1977-12-30
GB1476894A (en) 1977-06-16
AU498891B2 (en) 1979-03-29
FR2267748B1 (en) 1981-02-13
DE2515865A1 (en) 1975-10-30
JPS50146181A (en) 1975-11-22
FR2267748A1 (en) 1975-11-14
AU7899875A (en) 1976-09-16
CH614123A5 (en) 1979-11-15
ATA293975A (en) 1977-07-15
AT342214B (en) 1978-03-28
BR7502272A (en) 1976-03-09
IE40914B1 (en) 1979-09-12
IL46797A (en) 1977-11-30
PL101312B1 (en) 1978-12-30
SE411298B (en) 1979-12-17

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