FR580194A - Phonographe - Google Patents
PhonographeInfo
- Publication number
- FR580194A FR580194A FR580194DA FR580194A FR 580194 A FR580194 A FR 580194A FR 580194D A FR580194D A FR 580194DA FR 580194 A FR580194 A FR 580194A
- Authority
- FR
- France
- Prior art keywords
- phonograph
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR580194T | 1924-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR580194A true FR580194A (fr) | 1924-10-31 |
Family
ID=8956616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR580194D Expired FR580194A (fr) | 1924-04-16 | 1924-04-16 | Phonographe |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR580194A (fr) |
-
1924
- 1924-04-16 FR FR580194D patent/FR580194A/fr not_active Expired
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