DK418974A - - Google Patents
Info
- Publication number
- DK418974A DK418974A DK418974A DK418974A DK418974A DK 418974 A DK418974 A DK 418974A DK 418974 A DK418974 A DK 418974A DK 418974 A DK418974 A DK 418974A DK 418974 A DK418974 A DK 418974A
- Authority
- DK
- Denmark
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK418974AA DK135251B (da) | 1974-08-07 | 1974-08-07 | Elektromagnetisk lydgenerator. |
| DE2512268A DE2512268C3 (de) | 1974-08-07 | 1975-03-20 | Elektromagnetischer Schallerzeuger |
| US05/601,284 US4028503A (en) | 1974-08-07 | 1975-08-04 | Electromagnetic sound generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK418974AA DK135251B (da) | 1974-08-07 | 1974-08-07 | Elektromagnetisk lydgenerator. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK418974A true DK418974A (en:Method) | 1976-02-08 |
| DK135251B DK135251B (da) | 1977-03-21 |
| DK135251C DK135251C (en:Method) | 1977-09-05 |
Family
ID=8131117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK418974AA DK135251B (da) | 1974-08-07 | 1974-08-07 | Elektromagnetisk lydgenerator. |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4028503A (en:Method) |
| DE (1) | DE2512268C3 (en:Method) |
| DK (1) | DK135251B (en:Method) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US540969A (en) * | 1895-06-11 | Telephone | ||
| FR680855A (fr) * | 1929-08-27 | 1930-05-07 | Cie De Construction D Accessoi | Appareil producteur de sons actionné par électro-aimant |
| US3214753A (en) * | 1962-05-22 | 1965-10-26 | Automatic Power Inc | Sound signal system |
-
1974
- 1974-08-07 DK DK418974AA patent/DK135251B/da unknown
-
1975
- 1975-03-20 DE DE2512268A patent/DE2512268C3/de not_active Expired
- 1975-08-04 US US05/601,284 patent/US4028503A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DK135251C (en:Method) | 1977-09-05 |
| DK135251B (da) | 1977-03-21 |
| DE2512268B2 (de) | 1978-06-01 |
| DE2512268A1 (de) | 1976-02-26 |
| DE2512268C3 (de) | 1979-02-01 |
| US4028503A (en) | 1977-06-07 |