BE634227A - - Google Patents
Info
- Publication number
- BE634227A BE634227A BE634227DA BE634227A BE 634227 A BE634227 A BE 634227A BE 634227D A BE634227D A BE 634227DA BE 634227 A BE634227 A BE 634227A
- 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
- H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Measuring Fluid Pressure (AREA)
- Pressure Sensors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21645662A | 1962-08-13 | 1962-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE634227A true BE634227A (https=) |
Family
ID=22807141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE634227D BE634227A (https=) | 1962-08-13 |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT259268B (https=) |
| BE (1) | BE634227A (https=) |
| CH (1) | CH402951A (https=) |
| DE (1) | DE1206483B (https=) |
| ES (1) | ES291113A1 (https=) |
| GB (1) | GB1040837A (https=) |
| NL (1) | NL295979A (https=) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2479770A (en) * | 1948-02-27 | 1949-08-23 | Alton M Olson | Cartridge feeding magazine for firearms |
| US2522521A (en) * | 1949-01-14 | 1950-09-19 | Bell Telephone Labor Inc | Thermal transistor microphone |
| US2632062A (en) * | 1949-06-15 | 1953-03-17 | Bell Telephone Labor Inc | Semiconductor transducer |
| DE1006169B (de) * | 1952-02-07 | 1957-04-11 | Siemes & Halske Ag | Anordnung zur Umwandlung mechanischer in elektrische Schwingungen |
| US2905771A (en) * | 1957-05-15 | 1959-09-22 | Bell Telephone Labor Inc | Piezoresistive semiconductor microphone |
-
0
- BE BE634227D patent/BE634227A/xx unknown
- NL NL295979D patent/NL295979A/xx unknown
-
1963
- 1963-05-21 GB GB2009563A patent/GB1040837A/en not_active Expired
- 1963-07-19 DE DEW34926A patent/DE1206483B/de active Pending
- 1963-08-02 CH CH960663A patent/CH402951A/de unknown
- 1963-08-12 AT AT647563A patent/AT259268B/de active
- 1963-08-13 ES ES0291113A patent/ES291113A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH402951A (de) | 1965-11-30 |
| GB1040837A (en) | 1966-09-01 |
| AT259268B (de) | 1968-01-10 |
| NL295979A (https=) | |
| ES291113A1 (es) | 1963-12-01 |
| DE1206483B (de) | 1965-12-09 |