Patent USRE27329E successfully refreshed from Google Patents.
USRE27329E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Search tune system for television receivers
Assignee: —
•
Filing: 1970-04-24
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Granted: 1972-04-11
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Expires: 1990-04-24
Abstract
Abstract AN UNDETENTED TUNER MOTOR HOLDING CIRCUIT WITH AN ELECTRICALLY OPERABLE NORMALLY-CLOSED SWITCH THEREIN. A SWITCH CONTROL CIRCUIT HAVING A PAIR OF TRANSISTORS IN SERIES THEREIN, BOTH NORMALLY NON-CONDUCTING, ONE BEING ACTIVATED IN RESPONSE TO THE I-F CARRIER, AND THE OTHER BEING ACTIVATED IN RESPONSE TO A HORIZONTAL SYNC SIGNAL, SIMULTANEOUS ACTIVATION OF BOTH SERVING TO OPEN THE MOTOR HOLD CIRCUIT. A THIRD TRANSISTOR RESPONSIVE TO AGC LEVEL FOR CONTROLLING THE ONE TRANSISTOR IN ACCORDANCE WITH A SENSITIVITY SETTING.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:15
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |