FR743556A - - Google Patents
Info
- Publication number
- FR743556A FR743556A FR743556DA FR743556A FR 743556 A FR743556 A FR 743556A FR 743556D A FR743556D A FR 743556DA FR 743556 A FR743556 A FR 743556A
- 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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743556A true FR743556A (da) | 1933-04-01 |
Family
ID=1547798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743556D Expired FR743556A (da) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR743556A (da) |
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0
- FR FR743556D patent/FR743556A/fr not_active Expired