US3562652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double tuned input and fixed interstage vhf tuner
Assignee: RCA Licensing Corp
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Filing: 1968-03-14
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Granted: 1971-02-09
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Expires: 1988-03-14
Abstract
Abstract A VHF TUNER FOR A VHF-UHF TELEVISION RECEIVER COMPRISING THREE WAFERS MOUNTED ON A PRINTED CIRCUIT BOARD, EACH OF THE WAFERS CARRYING A PRINTED CONDUCTIVE PATTERN. TWO OF THE WAFERS COUPLE AN RF INPUT SECTION TO THE RF AMPLIFIER STAGE TO DOUBLE TUNE THE INPUT OF THE VHF TUNER. A THIRD OF THE WAFERS IS COUPLED TO THE OSCILLATOR STAGE. ROTATABLY MOUNTED CONTACT MEANS ARE ASSOCIATED WITH EACH OF THE WAFERS TO ENGAGE THE PRINTED CONDUCTIVE PATTERN IN 12 DIFFERENT VHF CONTACT POSITION AND 1 VHF CONTACT POSITION.
Inventors
- 👤 Eugene K Von Fange
- 👤 Sanjar Ghaem-Maghami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:10
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/26; H03J5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |