FR43764E - Avertisseur sonore - Google Patents
Avertisseur sonoreInfo
- Publication number
- FR43764E FR43764E FR43764DA FR43764E FR 43764 E FR43764 E FR 43764E FR 43764D A FR43764D A FR 43764DA FR 43764 E FR43764 E FR 43764E
- Authority
- FR
- France
- Prior art keywords
- buzzer
- 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 |
|---|---|---|---|
| FR43764T | 1933-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR43764E true FR43764E (fr) | 1934-08-30 |
Family
ID=8679698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR43764D Expired FR43764E (fr) | 1933-05-02 | 1933-05-02 | Avertisseur sonore |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR43764E (fr) |
-
1933
- 1933-05-02 FR FR43764D patent/FR43764E/fr not_active Expired
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