US3333202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television tuner
Assignee: TARZIAN MARY
•
Filing: 1963-08-27
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Granted: 1967-07-25
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Expires: 1983-08-27
Abstract
No abstract record available.
Inventors
- 👤 Alarico A Valdettaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:28
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24; H03J5/26; H03J5/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A TELEVISION TUNER, AN OSCILLATOR CIRCUIT COMPRISING AN ELECTRON CONTROL DEVICE HAVING AN INPUT ELECTRODE AND AN OUTPUT ELECTRODE, A PLURALITY OF INDUCTANCE TUNING CIRCUITS CORRESPONDING TO DIFFERENT TELEVISION CHANNELS, MEANS FOR SELECTIVELY CONNECTING DIFFERENT ONES OF SAID INDUCTANCE TUNING CIRCUITS IN CIRCUIT WITH SAID INPUT AND OUTPUT ELECTRODES TO PRODUCE SUSTAINED OSCILLATIONS AT A FREQUENCY DETERMINED BY THE SELECTED INDUCTANCE TUNING CIRCUIT, A VARIABLE FINE TUNING INDUCTANCE, MEANS CONNECTING SAID FINE TUNING INDUCTANCE IN SERIES WITH A SELECTED ONE OF SAID INDUCTANCE TUNING CIRCUITS TO SAID OUTPUT ELECTRODE, AND MEANS ALSO CONNECTING SAID FINE TUNING INDUCTANCE TO AN ALTERNATING CURRENT GROUND POINT, WHEREBY VARIATION OF SAID FINE TUNING INDUCTANCE IS EFFECTIVE TO VARY THE FREQUENCY OF SAID OSCILLATOR CIRCUIT BY A SUBSTANTIALLY FIXED AMOUNT IRRESPECTIVE OF THE PARTICULAR INDUCTANCE TUNING CIRCUIT WHICH IS SELECTED.
Claim 2
Dependent Claim
136 words
IN A TELEVISION TUNER, AN OSCILLATOR CIRCUIT COMPRISING AN ELECTRON CONTROL DEVICE HAVING AN INPUT ELECTRODE AND AN OUTPUT ELECTRODE, A PLURALITY OF INDUCTANCE TUNING CIRCUITS CORRESPONDING TO DIFFERENT TELEVISION CHANNELS, MEANS FOR SELECTIVELY CONNECTING DIFFERENT ONES OF SAID INDUCTANCE TUNING CIRCUITS IN CIRCUIT WITH SAID INPUT AND OUTPUT ELECTRODES TO PRODUCE SUSTAINED OSCILLATIONS AT A FREQUENCY DETERMINED BY THE SELECTED INDUCTANCE TUNING CIRCUIT, A VARIABLE FINE TUNING INDUCTANCE, MEANS CONNECTING SAID FINE TUNING INDUCTANCE IN SERIES WITH A SELECTED ONE OF SAID INDUCTANCE TUNING CIRCUITS TO SAID OUTPUT ELECTRODE, AND MEANS ALSO CONNECTING SAID FINE TUNING INDUCTANCE TO AN ALTERNATING CURRENT GROUND POINT, WHEREBY VARIATION OF SAID FINE TUNING INDUCTANCE IS EFFECTIVE TO VARY THE FREQUENCY OF SAID OSCILLATOR CIRCUIT BY A SUBSTANTIALLY FIXED AMOUNT IRRESPECTIVE OF THE PARTICULAR INDUCTANCE TUNING CIRCUIT WHICH IS SELECTED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |