BE431283A - - Google Patents
Info
- Publication number
- BE431283A BE431283A BE431283DA BE431283A BE 431283 A BE431283 A BE 431283A BE 431283D A BE431283D A BE 431283DA BE 431283 A BE431283 A BE 431283A
- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/14—Throat mountings for microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US162253A US2184064A (en) | 1937-09-03 | 1937-09-03 | Transmitter cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE431283A true BE431283A (en:Method) |
Family
ID=22584835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE431283D BE431283A (en:Method) | 1937-09-03 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2184064A (en:Method) |
| BE (1) | BE431283A (en:Method) |
-
0
- BE BE431283D patent/BE431283A/xx unknown
-
1937
- 1937-09-03 US US162253A patent/US2184064A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2184064A (en) | 1939-12-19 |