Patent US3146372A successfully refreshed from Google Patents.
US3146372A
Expired / Lapsed
US
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Sweep-failure protection circuit for cathode-ray tubes
Assignee: Individual
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Filing: 1961-01-17
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Granted: 1964-08-25
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Raymond B Fertig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:51
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A CATHODE-RAY TUBE SYSTEM WHICH INCLUDES A CATHODE-RAY TUBE HAVING AN ELECTRON-EMITTING CATHODE, A SENSITIZED SCREEN WHICH IS LUMINESCENTLY RESPONSIVE TO AN ELECTRON BEAM EMITTED FROM SAID CATHODE, AN ELECTRON BEAM INTENSITY CONTROL ELECTRODE WHICH IS BIASED RELATIVE TO SAID CATHODE AND AT LEAST ONE ELECTRON BEAM DEFLECTING MEANS, APPARATUS FOR CONTROLLING THE INTENSITY OF SAID ELECTRON BEAM ON SAID SENSITIZED SCREEN, COMPRISING, IN COMBINATION, A RECTIFIER IN CIRCUIT WITH SAID BEAM DEFLECTING MEANS ADAPTED TO RECTIFY A VARYING SIGNAL IMPOSED
Claim 2
Dependent Claim
82 words
IN A CATHODE-RAY TUBE SYSTEM WHICH INCLUDES A CATHODE-RAY TUBE HAVING AN ELECTRON-EMITTING CATHODE, A SENSITIZED SCREEN WHICH IS LUMINESCENTLY RESPONSIVE TO AN ELECTRON BEAM EMITTED FROM SAID CATHODE, AN ELECTRON BEAM INTENSITY CONTROL ELECTRODE WHICH IS BIASED RELATIVE TO SAID CATHODE AND AT LEAST ONE ELECTRON BEAM DEFLECTING MEANS, APPARATUS FOR CONTROLLING THE INTENSITY OF SAID ELECTRON BEAM ON SAID SENSITIZED SCREEN, COMPRISING, IN COMBINATION, A RECTIFIER IN CIRCUIT WITH SAID BEAM DEFLECTING MEANS ADAPTED TO RECTIFY A VARYING SIGNAL IMPOSED
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |