FR774990A - Buzzer - Google Patents
BuzzerInfo
- Publication number
- FR774990A FR774990A FR774990DA FR774990A FR 774990 A FR774990 A FR 774990A FR 774990D A FR774990D A FR 774990DA FR 774990 A FR774990 A FR 774990A
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR774990T | 1934-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR774990A true FR774990A (en) | 1934-12-17 |
Family
ID=9200195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR774990D Expired FR774990A (en) | 1934-05-04 | 1934-05-04 | Buzzer |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR774990A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2848415A1 (en) * | 1978-02-22 | 1979-08-23 | Fiamm Spa | SIGNAL HORN FOR A PNEUMATIC ACOUSTIC SIGNAL GENERATOR |
WO1987004953A1 (en) * | 1985-01-16 | 1987-08-27 | Kockum Sonics Ab | Apparatus for generating in particular low-frequency sound |
-
1934
- 1934-05-04 FR FR774990D patent/FR774990A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2848415A1 (en) * | 1978-02-22 | 1979-08-23 | Fiamm Spa | SIGNAL HORN FOR A PNEUMATIC ACOUSTIC SIGNAL GENERATOR |
WO1987004953A1 (en) * | 1985-01-16 | 1987-08-27 | Kockum Sonics Ab | Apparatus for generating in particular low-frequency sound |
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