US3265915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube
Assignee: RCA Corp
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Filing: 1963-01-04
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Granted: 1966-08-09
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Expires: 1983-01-04
Abstract
No abstract record available.
Inventors
- 👤 John J Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:23
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/20; H01J31/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CATHODE RAY TUBE HAVING DEFLECTION ZONE IN WHICH BEAM DEFLECTION FIELDS CAN BE ESTABLISHED FOR DEFLECTING AN ELECTRON BEAM IN TWO MUTUALLY PERPENDICULAR DIRECTIONS, SAID TUBE COMPRISING: (A) A LUMINESCENT SCREEN; (B) AN ELECTRON GUN FOR PROJECTION AN ELECTRON BEAM ALONG A PATH THROUGH SAID DEFLECTION ZONE TOWARD SAID SCREEN; AND (C) A TUBULAR SHIELD DISPOSED IN SAID DEFLECTION ZONE AND SURROUNDING SAID PATH; (D) SAID TUBULAR SHIELD HAVING TWO FLAT SIDE PORTIONS, EACH OF WHICH IS PARALLEL TO A DIFFERENT ONE OF SAID MUTUALLY PERPENDICULAR DIRECTIONS.
Claim 2
Dependent Claim
88 words
A CATHODE RAY TUBE HAVING DEFLECTION ZONE IN WHICH BEAM DEFLECTION FIELDS CAN BE ESTABLISHED FOR DEFLECTING AN ELECTRON BEAM IN TWO MUTUALLY PERPENDICULAR DIRECTIONS, SAID TUBE COMPRISING: (A) A LUMINESCENT SCREEN; (B) AN ELECTRON GUN FOR PROJECTION AN ELECTRON BEAM ALONG A PATH THROUGH SAID DEFLECTION ZONE TOWARD SAID SCREEN; AND (C) A TUBULAR SHIELD DISPOSED IN SAID DEFLECTION ZONE AND SURROUNDING SAID PATH; (D) SAID TUBULAR SHIELD HAVING TWO FLAT SIDE PORTIONS, EACH OF WHICH IS PARALLEL TO A DIFFERENT ONE OF SAID MUTUALLY PERPENDICULAR DIRECTIONS.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |