FR632638A - - Google Patents
Info
- Publication number
- FR632638A FR632638A FR632638DA FR632638A FR 632638 A FR632638 A FR 632638A FR 632638D A FR632638D A FR 632638DA FR 632638 A FR632638 A FR 632638A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE334357T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR632638A true FR632638A (fr) | 1928-01-12 |
Family
ID=3867884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR632638D Expired FR632638A (fr) |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE334357A (fr) |
| FR (1) | FR632638A (fr) |
-
0
- FR FR632638D patent/FR632638A/fr not_active Expired
- BE BE334357D patent/BE334357A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE334357A (fr) |