FR757826A - Improvements to valves for sound devices - Google Patents
Improvements to valves for sound devicesInfo
- Publication number
- FR757826A FR757826A FR757826DA FR757826A FR 757826 A FR757826 A FR 757826A FR 757826D A FR757826D A FR 757826DA FR 757826 A FR757826 A FR 757826A
- Authority
- FR
- France
- Prior art keywords
- valves
- sound devices
- sound
- devices
- 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
-
- 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
- G10K9/02—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated
- G10K9/04—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers driven by gas; e.g. suction operated by compressed gases, e.g. compressed air
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR757826T | 1933-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR757826A true FR757826A (en) | 1934-01-05 |
Family
ID=9166343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR757826D Expired FR757826A (en) | 1933-07-01 | 1933-07-01 | Improvements to valves for sound devices |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR757826A (en) |
-
1933
- 1933-07-01 FR FR757826D patent/FR757826A/en not_active Expired
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