FR771386A - Avertisseur sonore à dépression - Google Patents
Avertisseur sonore à dépressionInfo
- Publication number
- FR771386A FR771386A FR771386DA FR771386A FR 771386 A FR771386 A FR 771386A FR 771386D A FR771386D A FR 771386DA FR 771386 A FR771386 A FR 771386A
- Authority
- FR
- France
- Prior art keywords
- audible
- warning device
- vacuum warning
- vacuum
- warning
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR771386T | 1933-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR771386A true FR771386A (fr) | 1934-10-06 |
Family
ID=9190456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR771386D Expired FR771386A (fr) | 1933-07-01 | 1933-07-01 | Avertisseur sonore à dépression |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR771386A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2046835A1 (fr) * | 1969-06-18 | 1971-03-12 | Flamm Fabbrica Italiana |
-
1933
- 1933-07-01 FR FR771386D patent/FR771386A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2046835A1 (fr) * | 1969-06-18 | 1971-03-12 | Flamm Fabbrica Italiana |
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