IT1042081B - ELECTRONIC MICROPHONE MANUFACTURING PROCEDURE - Google Patents

ELECTRONIC MICROPHONE MANUFACTURING PROCEDURE

Info

Publication number: IT1042081B
Authority: IT; Italy
Prior art keywords: manufacturing procedure; microphone manufacturing; electronic microphone; electronic; procedure
Prior art date: 1974-08-15

Application number

IT26359/75A

Other languages

Italian (it)

Inventor

N Andersson

R Jonsson

Original Assignee

Ericsson Telefon Ab L M

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.)

1974-08-15

Filing date

1975-08-14

Publication date

1980-01-30

1975-08-14 Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M

1980-01-30 Application granted granted Critical

1980-01-30 Publication of IT1042081B publication Critical patent/IT1042081B/en

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

IT26359/75A 1974-08-15 1975-08-14 ELECTRONIC MICROPHONE MANUFACTURING PROCEDURE IT1042081B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE7410408A SE382297B (en)	1974-08-15	1974-08-15	PROCEDURE FOR MANUFACTURING AN ELECTRIC MICROPHONE WITH A CAREFULLY DETERMINED AIR GAP.

Publications (1)

Publication Number	Publication Date
IT1042081B true IT1042081B (en)	1980-01-30

Family

ID=20321900

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT26359/75A IT1042081B (en)	1974-08-15	1975-08-14	ELECTRONIC MICROPHONE MANUFACTURING PROCEDURE

Country Status (11)

Country	Link
CH (1)	CH589994A5 (en)
DE (1)	DE2532980C3 (en)
DK (1)	DK147670C (en)
ES (1)	ES440246A1 (en)
FI (1)	FI57680C (en)
FR (1)	FR2282195A1 (en)
GB (1)	GB1510833A (en)
IT (1)	IT1042081B (en)
NL (1)	NL7509703A (en)
NO (1)	NO136387C (en)
SE (1)	SE382297B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE398588B (en) *	1977-03-23	1977-12-27	Ericsson Telefon Ab L M	TEMPERATURE STABLE ELECTRIC MICROPHONE
GB2079055B (en) *	1980-06-30	1985-02-20	Tokyo Shibaura Electric Co	Electret device
US4365283A (en)	1980-10-16	1982-12-21	Pennwalt Corporation	Corona discharge poling process
US4418246A (en)	1980-10-29	1983-11-29	Tibbetts Industries, Inc.	Cell assembly for electret transducer
GB2136207B (en) *	1983-03-07	1987-06-17	Harold Wilson Meredith Pook	Manufacture of electrets
DE3927254A1 (en) *	1989-08-18	1991-02-21	Reifenhaeuser Masch	METHOD AND SPINNING NOZZLE UNIT FOR THE PRODUCTION OF PLASTIC THREADS AND / OR PLASTIC FIBERS INTO THE PRODUCTION OF A SPINNING FLEECE FROM THERMOPLASTIC PLASTIC

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA832651A (en) *		1970-01-20	Thermo Electron Corporation	Electroacoustic transducers and method of making the same
DE844306C (en) *	1948-10-02	1952-07-17	Siemens Ag	Condenser microphone with a very small distance between membrane and counter surface
FR1324076A (en) *	1962-05-30	1963-04-12	Accumulatoren Fabrik Ag	Accumulator, the electrical energy of which is stored in a dielectric and method for its manufacture
US3373251A (en) *	1965-02-23	1968-03-12	Shure Bros	Electrostatic transducer
NL146969B (en) *	1969-11-12	1975-08-15	Tno	IMPROVEMENT OF METHOD FOR FORMING A ONE-SIDED METALLIZED ELECTRICAL FOIL.
JPS5115599B1 (en) *	1971-07-28	1976-05-18
SE362571B (en) *	1971-12-02	1973-12-10	Ericsson Telefon Ab L M
NL7210088A (en) *	1972-07-21	1974-01-23

1974
- 1974-08-15 SE SE7410408A patent/SE382297B/en not_active IP Right Cessation
1975
- 1975-07-23 DE DE2532980A patent/DE2532980C3/en not_active Expired
- 1975-07-24 FI FI752120A patent/FI57680C/en not_active IP Right Cessation
- 1975-08-12 GB GB33607/75A patent/GB1510833A/en not_active Expired
- 1975-08-14 NL NL7509703A patent/NL7509703A/en not_active Application Discontinuation
- 1975-08-14 ES ES440246A patent/ES440246A1/en not_active Expired
- 1975-08-14 FR FR7525443A patent/FR2282195A1/en active Granted
- 1975-08-14 DK DK368875A patent/DK147670C/en not_active IP Right Cessation
- 1975-08-14 IT IT26359/75A patent/IT1042081B/en active
- 1975-08-14 NO NO752839A patent/NO136387C/en unknown
- 1975-08-14 CH CH1057375A patent/CH589994A5/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
SE7410408L (en)	1976-01-19
FI752120A7 (en)	1976-02-16
DK147670B (en)	1984-11-05
FR2282195A1 (en)	1976-03-12
FR2282195B1 (en)	1979-05-11
SE382297B (en)	1976-01-19
NO752839L (en)	1976-02-17
FI57680C (en)	1980-09-10
FI57680B (en)	1980-05-30
GB1510833A (en)	1978-05-17
NO136387C (en)	1977-08-31
DK147670C (en)	1985-05-20
DK368875A (en)	1976-02-16
NL7509703A (en)	1976-02-17
CH589994A5 (en)	1977-07-29
DE2532980C3 (en)	1985-07-11
DE2532980A1 (en)	1976-03-04
DE2532980B2 (en)	1976-08-05
ES440246A1 (en)	1977-03-01
NO136387B (en)	1977-05-16

Publication	Publication Date	Title
SE7413047L (en)	1976-04-20	MICROPHONE
TR18704A (en)	1977-08-10	TRIAZOL TUEREVLERI
FR2278208A1 (en)	1976-02-06	INTEGRATED CIRCUIT
AT373724B (en)	1984-02-10	INTEGRATED CIRCUIT
BE829610A (en)	1975-11-28	DATAVERWERKEND SYSTEEM MET INGANGS / UITGANGS-PROCESSOREN
IT1039561B (en)	1979-12-10	EXTENSIMETER TRANSDUCERS
DE2559729A1 (en)	1977-08-25	INTEGRATED CIRCUIT
IT1064349B (en)	1985-02-18	HYDROXY-ARYLALDEHYES MANUFACTURING PROCEDURE
AT351283B (en)	1979-07-10	ACOUSTIC MICROSCOPE
SE7607437L (en)	1977-01-09	THE ELECTRONIC PHONE
SE397142B (en)	1977-10-17	ELECTRONIC COPYER
DK691474A (en)	1975-12-08	SPEAKER
AT350107B (en)	1979-05-10	AMPLIFIER CIRCUIT
NL7402575A (en)	1975-08-28	ELECTRONIC TELEPHONE SET.
NL7416395A (en)	1976-06-21	ELECTRONIC MICROSKOP.
SE384959B (en)	1976-05-24	PHONE ADDITION
IT1042081B (en)	1980-01-30	ELECTRONIC MICROPHONE MANUFACTURING PROCEDURE
SE7506416L (en)	1975-12-09	ELECTRONIC TAXAMETER.
SE7514211L (en)	1976-06-18	BAND SPEAKER
SE7513387L (en)	1976-05-31	ELECTRONIC CONNECTOR
IT1044741B (en)	1980-04-21	BOROCUBIC NITRIDE PRODUCTION
FR2282203A1 (en)	1976-03-12	LOUD SPEAKER
SE7512197L (en)	1976-05-03	ELECTRICAL CAPACITOR
JPS5158553A (en)	1976-05-21	BOSEKISHI CHOKARYORIKAKO SHINO SEIZOHO
IT1031875B (en)	1979-05-10	ELECTRONIC TEMPERIZATION DEVICE