FR999314A - - Google Patents
Info
- Publication number
- FR999314A FR999314A FR999314DA FR999314A FR 999314 A FR999314 A FR 999314A FR 999314D A FR999314D A FR 999314DA FR 999314 A FR999314 A FR 999314A
- 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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR999314A true FR999314A (fr) | 1952-01-29 |
Family
ID=1567256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR999314D Expired FR999314A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR999314A (fr) |
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0
- FR FR999314D patent/FR999314A/fr not_active Expired