FR620555A - - Google Patents
Info
- Publication number
- FR620555A FR620555A FR620555DA FR620555A FR 620555 A FR620555 A FR 620555A FR 620555D A FR620555D A FR 620555DA FR 620555 A FR620555 A FR 620555A
- 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
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR620555A true FR620555A (fr) | 1927-04-25 |
Family
ID=1541157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR620555D Expired FR620555A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR620555A (fr) |
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0
- FR FR620555D patent/FR620555A/fr not_active Expired