FR741645A - - Google Patents
Info
- Publication number
- FR741645A FR741645A FR741645DA FR741645A FR 741645 A FR741645 A FR 741645A FR 741645D A FR741645D A FR 741645DA FR 741645 A FR741645 A FR 741645A
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741645A true FR741645A (xx) | 1933-02-16 |
Family
ID=1546151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741645D Expired FR741645A (xx) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR741645A (xx) |
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0
- FR FR741645D patent/FR741645A/fr not_active Expired