FR741668A - - Google Patents
Info
- Publication number
- FR741668A FR741668A FR741668DA FR741668A FR 741668 A FR741668 A FR 741668A FR 741668D A FR741668D A FR 741668DA FR 741668 A FR741668 A FR 741668A
- 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
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741668A true FR741668A (ja) | 1933-02-17 |
Family
ID=1546170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741668D Expired FR741668A (ja) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR741668A (ja) |
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0
- FR FR741668D patent/FR741668A/fr not_active Expired