BE479953A - - Google Patents
Info
- Publication number
- BE479953A BE479953A BE479953DA BE479953A BE 479953 A BE479953 A BE 479953A BE 479953D A BE479953D A BE 479953DA BE 479953 A BE479953 A BE 479953A
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB266931X | 1940-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE479953A true BE479953A (ko) |
Family
ID=10247697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE479953D BE479953A (ko) | 1940-11-29 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2360796A (ko) |
| BE (1) | BE479953A (ko) |
| CH (1) | CH266931A (ko) |
| FR (1) | FR939303A (ko) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485278A (en) * | 1945-03-31 | 1949-10-18 | Permoflux Corp | Hand microphone and switch |
| US2493734A (en) * | 1945-05-23 | 1950-01-03 | Sonotone Corp | Magnetic insert earphone insertable in the ear of the user |
| US2523775A (en) * | 1946-05-17 | 1950-09-26 | Wheeler Insulated Wire Company | Electromagnetic transducer |
| BE476263A (ko) * | 1946-06-21 | |||
| BE473856A (ko) * | 1946-10-19 | |||
| US3060282A (en) * | 1957-07-26 | 1962-10-23 | Baldwin Piano Co | Electroacoustic transducer |
| US3066200A (en) * | 1958-08-11 | 1962-11-27 | William Ward Jackson | Speaker device |
| NL253777A (ko) * | 1960-05-05 | |||
| DE1155486B (de) * | 1961-03-08 | 1963-10-10 | Arnstadt Fernmeldewerk | Ringfoermiges oder rechteckfoermiges, in bezug auf den Anker symmetrisches Magnetsystem fuer elektroakustische Wandler |
| KR20180079856A (ko) * | 2017-01-03 | 2018-07-11 | 유수진 | 브리지 에지 방식의 고해상 전자기 스피커 |
-
0
- BE BE479953D patent/BE479953A/xx unknown
-
1942
- 1942-05-12 US US442655A patent/US2360796A/en not_active Expired - Lifetime
-
1946
- 1946-06-28 CH CH266931D patent/CH266931A/de unknown
- 1946-08-29 FR FR939303D patent/FR939303A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR939303A (fr) | 1948-11-09 |
| CH266931A (de) | 1950-02-28 |
| US2360796A (en) | 1944-10-17 |