FR600019A - - Google Patents
Info
- Publication number
- FR600019A FR600019A FR600019DA FR600019A FR 600019 A FR600019 A FR 600019A FR 600019D A FR600019D A FR 600019DA FR 600019 A FR600019 A FR 600019A
- 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
- 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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR600019A true FR600019A (ru) | 1926-01-28 |
Family
ID=1540386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR600019D Expired FR600019A (ru) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR600019A (ru) |
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0
- FR FR600019D patent/FR600019A/fr not_active Expired