BE364298A - - Google Patents
Info
- Publication number
- BE364298A BE364298A BE364298DA BE364298A BE 364298 A BE364298 A BE 364298A BE 364298D A BE364298D A BE 364298DA BE 364298 A BE364298 A BE 364298A
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Auxiliary Devices For Music (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR662693T | 1928-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE364298A true BE364298A (en:Method) |
Family
ID=9011645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE364298D BE364298A (en:Method) | 1928-10-12 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE364298A (en:Method) |
| FR (1) | FR662693A (en:Method) |
| GB (1) | GB333796A (en:Method) |
-
0
- BE BE364298D patent/BE364298A/xx unknown
-
1928
- 1928-10-12 FR FR662693D patent/FR662693A/fr not_active Expired
-
1929
- 1929-10-11 GB GB30886/29A patent/GB333796A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR662693A (fr) | 1929-08-09 |
| GB333796A (en) | 1930-08-21 |