BE548920A - - Google Patents
Info
- Publication number
- BE548920A BE548920A BE548920DA BE548920A BE 548920 A BE548920 A BE 548920A BE 548920D A BE548920D A BE 548920DA BE 548920 A BE548920 A BE 548920A
- Authority
- BE
- Belgium
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
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
- H04R13/02—Telephone receivers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US529435A US2791641A (en) | 1955-08-19 | 1955-08-19 | Telephone receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE548920A true BE548920A (cs) |
Family
ID=24109897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE548920D BE548920A (cs) | 1955-08-19 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2791641A (cs) |
| BE (1) | BE548920A (cs) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2958739A (en) * | 1954-08-13 | 1960-11-01 | Schalltechnik Dr Ing K Schoeps | Electroacoustic transducer |
| US3660602A (en) * | 1970-06-01 | 1972-05-02 | Conrac Corp | Microphone cartridge with amplifier |
| JPS5330296A (en) * | 1976-09-01 | 1978-03-22 | Seiko Instr & Electronics Ltd | Electro-acoustic transducer |
| JPS6017191B2 (ja) * | 1977-12-30 | 1985-05-01 | アイホン株式会社 | 風雑音減衰効果を有するマイクロンホンユニツト |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1943425A (en) * | 1931-12-26 | 1934-01-16 | Kellogg Switchboard & Supply | Diaphragm |
| GB425186A (en) * | 1933-11-24 | 1935-03-08 | Alfred Graham & Co Ltd | Improvements relating to telephones |
| US2205669A (en) * | 1938-07-22 | 1940-06-25 | Associated Electric Lab Inc | Sound translating device and method of making the same |
| NL73059C (cs) * | 1939-05-19 | |||
| US2522266A (en) * | 1948-05-25 | 1950-09-12 | Beltone Hearing Aid Co | Magnetic receiver |
-
0
- BE BE548920D patent/BE548920A/xx unknown
-
1955
- 1955-08-19 US US529435A patent/US2791641A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2791641A (en) | 1957-05-07 |