FR632512A - - Google Patents
Info
- Publication number
- FR632512A FR632512A FR632512DA FR632512A FR 632512 A FR632512 A FR 632512A FR 632512D A FR632512D A FR 632512DA FR 632512 A FR632512 A FR 632512A
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR632512A true FR632512A (en:Method) | 1928-01-11 |
Family
ID=1541599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR632512D Expired FR632512A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR632512A (en:Method) |
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0
- FR FR632512D patent/FR632512A/fr not_active Expired