BE648940A - - Google Patents
Info
- Publication number
- BE648940A BE648940A BE648940A BE648940A BE648940A BE 648940 A BE648940 A BE 648940A BE 648940 A BE648940 A BE 648940A BE 648940 A BE648940 A BE 648940A BE 648940 A BE648940 A BE 648940A
- Authority
- BE
- Belgium
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
- H04R19/04—Microphones
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
- H03F1/565—Modifications of input or output impedances, not otherwise provided for using inductive elements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL293824 | 1963-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE648940A true BE648940A (xx) | 1964-12-07 |
Family
ID=19754765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE648940A BE648940A (xx) | 1963-06-07 | 1964-06-05 |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT242746B (xx) |
| BE (1) | BE648940A (xx) |
| DE (1) | DE1185240B (xx) |
| FR (1) | FR1397888A (xx) |
| NL (1) | NL293824A (xx) |
-
0
- NL NL293824D patent/NL293824A/xx unknown
-
1964
- 1964-06-03 DE DEN25053A patent/DE1185240B/de active Pending
- 1964-06-04 AT AT481664A patent/AT242746B/de active
- 1964-06-05 BE BE648940A patent/BE648940A/xx unknown
- 1964-06-08 FR FR977440A patent/FR1397888A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1397888A (fr) | 1965-04-30 |
| NL293824A (xx) | |
| DE1185240B (de) | 1965-01-14 |
| AT242746B (de) | 1965-10-11 |