BE378730A - - Google Patents
Info
- Publication number
- BE378730A BE378730A BE378730DA BE378730A BE 378730 A BE378730 A BE 378730A BE 378730D A BE378730D A BE 378730DA BE 378730 A BE378730 A BE 378730A
- 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
- H04R19/00—Electrostatic transducers
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 |
|---|---|---|---|
| FR40046T | 1931-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE378730A true BE378730A (pt) |
Family
ID=8676373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE378730D BE378730A (pt) | 1931-03-30 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE378730A (pt) |
| FR (2) | FR708702A (pt) |
-
0
- BE BE378730D patent/BE378730A/xx unknown
-
1930
- 1930-04-07 FR FR708702D patent/FR708702A/fr not_active Expired
-
1931
- 1931-03-30 FR FR40046D patent/FR40046E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR40046E (fr) | 1932-03-21 |
| FR708702A (fr) | 1931-07-28 |