BE364802A - - Google Patents
Info
- Publication number
- BE364802A BE364802A BE364802DA BE364802A BE 364802 A BE364802 A BE 364802A BE 364802D A BE364802D A BE 364802DA BE 364802 A BE364802 A BE 364802A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR683779T | 1929-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE364802A true BE364802A (en:Method) |
Family
ID=9024077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE364802D BE364802A (en:Method) | 1929-10-23 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE364802A (en:Method) |
| CH (1) | CH147847A (en:Method) |
| FR (1) | FR683779A (en:Method) |
-
0
- BE BE364802D patent/BE364802A/xx unknown
-
1929
- 1929-10-22 CH CH147847D patent/CH147847A/fr unknown
- 1929-10-23 FR FR683779D patent/FR683779A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH147847A (fr) | 1931-06-30 |
| FR683779A (fr) | 1930-06-17 |