BE470385A - - Google Patents
Info
- Publication number
- BE470385A BE470385A BE470385DA BE470385A BE 470385 A BE470385 A BE 470385A BE 470385D A BE470385D A BE 470385DA BE 470385 A BE470385 A BE 470385A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/046—Construction
- H04R9/047—Construction in which the windings of the moving coil lay in the same plane
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/08—Microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH939508X | 1946-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE470385A true BE470385A (xx) |
Family
ID=4549305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE470385D BE470385A (xx) | 1946-01-08 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE470385A (xx) |
| CH (1) | CH256014A (xx) |
| FR (1) | FR939508A (xx) |
| LU (1) | LU28277A1 (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2691148A (en) * | 1950-06-24 | 1954-10-05 | Rca Corp | Ultrasonic transducer |
| SU581600A1 (ru) * | 1975-01-14 | 1977-11-25 | Kasatkin Aleksej F | Ленточный громкоговоритель |
| US4081627A (en) * | 1976-12-27 | 1978-03-28 | Audio Research Corporation | Electromagnetic bipolar loud speaker |
-
0
- LU LU28277D patent/LU28277A1/xx unknown
- BE BE470385D patent/BE470385A/xx unknown
-
1946
- 1946-01-08 CH CH256014D patent/CH256014A/it unknown
-
1947
- 1947-01-03 FR FR939508D patent/FR939508A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| LU28277A1 (xx) | |
| CH256014A (it) | 1948-07-31 |
| FR939508A (fr) | 1948-11-17 |