FR767420A - - Google Patents
Info
- Publication number
- FR767420A FR767420A FR767420DA FR767420A FR 767420 A FR767420 A FR 767420A FR 767420D A FR767420D A FR 767420DA FR 767420 A FR767420 A FR 767420A
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR767420A true FR767420A (en:Method) | 1934-07-16 |
Family
ID=1551429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR767420D Expired FR767420A (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR767420A (en:Method) |
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0
- FR FR767420D patent/FR767420A/fr not_active Expired