Patent US3185879A successfully refreshed from Google Patents.
US3185879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube having deflection enhancement means
Assignee: RCA Corp
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Filing: 1960-03-17
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Granted: 1965-05-25
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Expires: 1980-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jr John Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:13
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/80; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/20; H01J9/00; H01J9/20; H01J9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A CATHODE RAY TUBE COMPRISING N ENVELOPE, A PHOSPHOR SCREEN WITHIN SAID ENVELOPE, AN ELECTRON GUN INCLUDING A CATHODE DISPOSED IN SAD ENVELOPE AND ADAPTED TO PROJECT AN ELECTRON BEAM THROUGH A PRIMARY DEFLECTION ZONE AND UPON SAID PHOSPHOR SCREEN, AND MEANS INCLUDING A CONDUCTIVE ELECTRODE SURFACE SUPPORTED ON THE INSIDE OF SAID ENVELOPE AND PRODUCING AN OVERALL ELECTRON ACCELERATING FIELD OF ONE POLARITY BETWEEN SAID CATHODE AND SAID ZONE AND AN OVERALL ELECTRON DECELERATING FIELD OF OPPOSITE POLARITY BETWEEN SAID ZONE AND SAID SCREEN, SAID
Claim 2
Dependent Claim
86 words
A CATHODE RAY TUBE COMPRISING N ENVELOPE, A PHOSPHOR SCREEN WITHIN SAID ENVELOPE, AN ELECTRON GUN INCLUDING A CATHODE DISPOSED IN SAD ENVELOPE AND ADAPTED TO PROJECT AN ELECTRON BEAM THROUGH A PRIMARY DEFLECTION ZONE AND UPON SAID PHOSPHOR SCREEN, AND MEANS INCLUDING A CONDUCTIVE ELECTRODE SURFACE SUPPORTED ON THE INSIDE OF SAID ENVELOPE AND PRODUCING AN OVERALL ELECTRON ACCELERATING FIELD OF ONE POLARITY BETWEEN SAID CATHODE AND SAID ZONE AND AN OVERALL ELECTRON DECELERATING FIELD OF OPPOSITE POLARITY BETWEEN SAID ZONE AND SAID SCREEN, SAID
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |