BE388757A - - Google Patents
Info
- Publication number
- BE388757A BE388757A BE388757DA BE388757A BE 388757 A BE388757 A BE 388757A BE 388757D A BE388757D A BE 388757DA BE 388757 A BE388757 A BE 388757A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/24—Frequency- independent attenuators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR41242T | 1931-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE388757A true BE388757A (xx) |
Family
ID=8677423
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE380796D BE380796A (xx) | 1931-06-22 | ||
| BE388757D BE388757A (xx) | 1931-06-22 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE380796D BE380796A (xx) | 1931-06-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1912719A (xx) |
| BE (2) | BE388757A (xx) |
| FR (2) | FR714252A (xx) |
| GB (1) | GB390486A (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125677A (en) * | 1953-07-20 | 1964-03-17 | Certificate of correction | |
| US3453529A (en) * | 1967-02-17 | 1969-07-01 | Weston Instruments Inc | Attenuators having constant output resistance |
| US3478259A (en) * | 1967-07-06 | 1969-11-11 | Frank R Bradley | Voltage divider with constant source impedance stages |
| US4021614A (en) * | 1974-12-30 | 1977-05-03 | Teledyne, Inc. | Woofer equalizer |
| JPH01305612A (ja) * | 1988-06-02 | 1989-12-08 | Toshiba Corp | 減衰器 |
-
0
- BE BE380796D patent/BE380796A/xx unknown
- BE BE388757D patent/BE388757A/xx unknown
-
1930
- 1930-07-03 FR FR714252D patent/FR714252A/fr not_active Expired
-
1931
- 1931-06-19 US US545385A patent/US1912719A/en not_active Expired - Lifetime
- 1931-06-22 FR FR41242D patent/FR41242E/fr not_active Expired
- 1931-07-01 GB GB19018/31A patent/GB390486A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR714252A (fr) | 1931-11-10 |
| BE380796A (xx) | |
| GB390486A (en) | 1933-04-06 |
| US1912719A (en) | 1933-06-06 |
| FR41242E (fr) | 1932-12-02 |