BE441600A - - Google Patents
Info
- Publication number
- BE441600A BE441600A BE441600DA BE441600A BE 441600 A BE441600 A BE 441600A BE 441600D A BE441600D A BE 441600DA BE 441600 A BE441600 A BE 441600A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US546478XA | 1940-01-23 | 1940-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441600A true BE441600A (https=) |
Family
ID=21992555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441600D BE441600A (https=) | 1940-01-23 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2263308A (https=) |
| BE (1) | BE441600A (https=) |
| GB (1) | GB546478A (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2567407A (en) * | 1948-04-23 | 1951-09-11 | Stromberg Carlson Co | Electroacoustic transducer |
| US4310731A (en) * | 1979-08-02 | 1982-01-12 | Dynamic Compliance, Incorporated | Thermal motion transducer |
-
0
- US US2263308D patent/US2263308A/en not_active Expired - Lifetime
- BE BE441600D patent/BE441600A/xx unknown
-
1941
- 1941-01-17 GB GB653/41A patent/GB546478A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2263308A (en) | 1941-11-18 |
| GB546478A (en) | 1942-07-15 |