FR564285A - Haut parleur - Google Patents
Haut parleurInfo
- Publication number
- FR564285A FR564285A FR564285DA FR564285A FR 564285 A FR564285 A FR 564285A FR 564285D A FR564285D A FR 564285DA FR 564285 A FR564285 A FR 564285A
- Authority
- FR
- France
- Prior art keywords
- loud speaker
- loud
- speaker
- Prior art date
- 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
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR564285T | 1923-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR564285A true FR564285A (fr) | 1923-12-26 |
Family
ID=8945638
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR564285D Expired FR564285A (fr) | 1923-03-23 | 1923-03-23 | Haut parleur |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR564285A (fr) |
-
1923
- 1923-03-23 FR FR564285D patent/FR564285A/fr not_active Expired
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