FR550969A - Electric cone - Google Patents
Electric coneInfo
- Publication number
- FR550969A FR550969A FR550969DA FR550969A FR 550969 A FR550969 A FR 550969A FR 550969D A FR550969D A FR 550969DA FR 550969 A FR550969 A FR 550969A
- Authority
- FR
- France
- Prior art keywords
- electric cone
- cone
- electric
- 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
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US550969XA | 1922-01-09 | 1922-01-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR550969A true FR550969A (en) | 1923-03-24 |
Family
ID=21995566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR550969D Expired FR550969A (en) | 1922-01-09 | 1922-05-04 | Electric cone |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR550969A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2461320A1 (en) * | 1979-07-13 | 1981-01-30 | Lectron Products | SOUND GENERATOR |
-
1922
- 1922-05-04 FR FR550969D patent/FR550969A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2461320A1 (en) * | 1979-07-13 | 1981-01-30 | Lectron Products | SOUND GENERATOR |
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