FR2157309A6 - - Google Patents
Info
- Publication number
- FR2157309A6 FR2157309A6 FR7226550A FR7226550A FR2157309A6 FR 2157309 A6 FR2157309 A6 FR 2157309A6 FR 7226550 A FR7226550 A FR 7226550A FR 7226550 A FR7226550 A FR 7226550A FR 2157309 A6 FR2157309 A6 FR 2157309A6
- Authority
- FR
- France
- 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
- G10K5/00—Whistles
- G10K5/02—Ultrasonic whistles
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00189206A US3831550A (en) | 1970-11-02 | 1971-10-14 | Sonic wave generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2157309A6 true FR2157309A6 (OSRAM) | 1973-06-01 |
Family
ID=22696376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7226550A Expired FR2157309A6 (OSRAM) | 1971-10-14 | 1972-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2157309A6 (OSRAM) |
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1972
- 1972-07-24 FR FR7226550A patent/FR2157309A6/fr not_active Expired