NO752839L - - Google Patents
Info
- Publication number
- NO752839L NO752839L NO752839A NO752839A NO752839L NO 752839 L NO752839 L NO 752839L NO 752839 A NO752839 A NO 752839A NO 752839 A NO752839 A NO 752839A NO 752839 L NO752839 L NO 752839L
- Authority
- NO
- Norway
Links
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7410408A SE7410408L (en) | 1974-08-15 | 1974-08-15 | PROCEDURE FOR MANUFACTURING AN ELECTRIC MICROPHONE WITH A CAREFULLY DETERMINED AIR GAP. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO752839L true NO752839L (en) | 1976-02-17 |
| NO136387B NO136387B (en) | 1977-05-16 |
| NO136387C NO136387C (en) | 1977-08-31 |
Family
ID=20321900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO752839A NO136387C (en) | 1974-08-15 | 1975-08-14 | PROCEDURE FOR MANUFACTURING AN ELECTRIC MICROPHONE WITH AN EXACTLY DETERMINED AIR GAP |
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) | SE7410408L (en) |
Families Citing this family (4)
| 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 |
| 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)
| 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 |
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1974
- 1974-08-15 SE SE7410408A patent/SE7410408L/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 IT IT26359/75A patent/IT1042081B/en active
- 1975-08-14 NO NO752839A patent/NO136387C/en unknown
- 1975-08-14 ES ES440246A patent/ES440246A1/en not_active Expired
- 1975-08-14 NL NL7509703A patent/NL7509703A/en not_active Application Discontinuation
- 1975-08-14 DK DK368875A patent/DK147670C/en not_active IP Right Cessation
- 1975-08-14 CH CH1057375A patent/CH589994A5/xx not_active IP Right Cessation
- 1975-08-14 FR FR7525443A patent/FR2282195A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2282195A1 (en) | 1976-03-12 |
| GB1510833A (en) | 1978-05-17 |
| DE2532980A1 (en) | 1976-03-04 |
| DK147670C (en) | 1985-05-20 |
| DK147670B (en) | 1984-11-05 |
| NO136387B (en) | 1977-05-16 |
| FI752120A (en) | 1976-02-16 |
| ES440246A1 (en) | 1977-03-01 |
| FR2282195B1 (en) | 1979-05-11 |
| SE382297B (en) | 1976-01-19 |
| NO136387C (en) | 1977-08-31 |
| SE7410408L (en) | 1976-01-19 |
| CH589994A5 (en) | 1977-07-29 |
| NL7509703A (en) | 1976-02-17 |
| DK368875A (en) | 1976-02-16 |
| DE2532980B2 (en) | 1976-08-05 |
| FI57680C (en) | 1980-09-10 |
| IT1042081B (en) | 1980-01-30 |
| FI57680B (en) | 1980-05-30 |
| DE2532980C3 (en) | 1985-07-11 |