FR507609A - Sound wave generator - Google Patents
Sound wave generatorInfo
- Publication number
- FR507609A FR507609A FR507609A FR507609DA FR507609A FR 507609 A FR507609 A FR 507609A FR 507609 A FR507609 A FR 507609A FR 507609D A FR507609D A FR 507609DA FR 507609 A FR507609 A FR 507609A
- Authority
- FR
- France
- Prior art keywords
- sound wave
- wave generator
- generator
- sound
- wave
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Electrophonic Musical Instruments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US215291A US1399877A (en) | 1918-02-04 | 1918-02-04 | Sound-generator |
Publications (1)
Publication Number | Publication Date |
---|---|
FR507609A true FR507609A (en) | 1920-09-20 |
Family
ID=22802394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR507609A Expired FR507609A (en) | 1918-02-04 | 1919-12-20 | Sound wave generator |
Country Status (3)
Country | Link |
---|---|
US (1) | US1399877A (en) |
FR (1) | FR507609A (en) |
GB (1) | GB139497A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2415094A (en) * | 1938-01-17 | 1947-02-04 | Board | Radio measurement of distances and velocities |
US2541944A (en) * | 1946-06-13 | 1951-02-13 | Stromberg Carlson Co | Diaphragm mounting |
US2530971A (en) * | 1947-07-26 | 1950-11-21 | Standard Oil Dev Co | Acoustic well logging apparatus |
US3160715A (en) * | 1960-11-15 | 1964-12-08 | Gussing Nils Torsten Alson | Electrostatic loudspeakers |
US3557899A (en) * | 1967-01-10 | 1971-01-26 | Edward G Longinette | Riot control devices employing a modulated stimulus frequency |
SE415420B (en) * | 1978-05-16 | 1980-09-29 | Klaus Kulper | HIGH EFFICIENCY CONDENSOR WITH GASFUL DIELECTRIC |
-
1918
- 1918-02-04 US US215291A patent/US1399877A/en not_active Expired - Lifetime
-
1919
- 1919-12-20 FR FR507609A patent/FR507609A/en not_active Expired
-
1920
- 1920-02-25 GB GB5737/20A patent/GB139497A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US1399877A (en) | 1921-12-13 |
GB139497A (en) | 1920-11-11 |
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