BE438137A - - Google Patents
Info
- Publication number
- BE438137A BE438137A BE438137DA BE438137A BE 438137 A BE438137 A BE 438137A BE 438137D A BE438137D A BE 438137DA BE 438137 A BE438137 A BE 438137A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
- H03J1/10—Rope drive; Chain drive
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL538389X | 1939-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE438137A true BE438137A (https=) |
Family
ID=19787234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE438137D BE438137A (https=) | 1939-02-28 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2238752A (https=) |
| BE (1) | BE438137A (https=) |
| FR (1) | FR863589A (https=) |
| GB (1) | GB538389A (https=) |
| NL (1) | NL55445C (https=) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2471523A (en) * | 1941-11-04 | 1949-05-31 | Hartford Nat Bank & Trust Co | Circuit element for tuning an electric circuit over a plurality of frequency bands |
| FR955285A (https=) * | 1942-01-07 | 1950-01-11 | ||
| BE453138A (https=) * | 1942-11-12 | |||
| BE463073A (https=) * | 1944-03-16 | |||
| US2494502A (en) * | 1944-06-26 | 1950-01-10 | Ferris Instr Lab | Electrical capacitance device |
| US2922881A (en) * | 1955-04-18 | 1960-01-26 | Standard Coil Prod Co Inc | Manual control having rotatable and tiltable stepped cam for television tuner |
| US2796519A (en) * | 1956-01-30 | 1957-06-18 | Rca Corp | Tuning device |
-
0
- NL NL55445D patent/NL55445C/xx active
- BE BE438137D patent/BE438137A/xx unknown
-
1939
- 1939-10-14 US US299508A patent/US2238752A/en not_active Expired - Lifetime
-
1940
- 1940-02-26 GB GB3574/40A patent/GB538389A/en not_active Expired
- 1940-02-28 FR FR863589D patent/FR863589A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2238752A (en) | 1941-04-15 |
| GB538389A (en) | 1941-07-31 |
| NL55445C (https=) | |
| FR863589A (fr) | 1941-04-04 |