FR743453A - - Google Patents
Info
- Publication number
- FR743453A FR743453A FR743453DA FR743453A FR 743453 A FR743453 A FR 743453A FR 743453D A FR743453D A FR 743453DA FR 743453 A FR743453 A FR 743453A
- 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
- H04R19/00—Electrostatic transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743453A true FR743453A (fr) | 1933-03-31 |
Family
ID=1547708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743453D Expired FR743453A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR743453A (fr) |
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0
- FR FR743453D patent/FR743453A/fr not_active Expired