FR575113A - Perfectionnements apportés aux phonographes - Google Patents
Perfectionnements apportés aux phonographesInfo
- Publication number
- FR575113A FR575113A FR575113DA FR575113A FR 575113 A FR575113 A FR 575113A FR 575113D A FR575113D A FR 575113DA FR 575113 A FR575113 A FR 575113A
- Authority
- FR
- France
- Prior art keywords
- phonographs
- 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
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
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 |
---|---|---|---|
FR575113T | 1923-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR575113A true FR575113A (fr) | 1924-07-24 |
Family
ID=8953160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR575113D Expired FR575113A (fr) | 1923-12-28 | 1923-12-28 | Perfectionnements apportés aux phonographes |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR575113A (fr) |
-
1923
- 1923-12-28 FR FR575113D patent/FR575113A/fr not_active Expired
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