Patent US2967963A successfully refreshed from Google Patents.
US2967963A
Expired / Lapsed
US
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Electron gun structure
Assignee: RCA Corp
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Filing: 1957-04-30
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Granted: 1961-01-10
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Expires: 1977-04-30
Abstract
No abstract record available.
Inventors
- 👤 David C Ballard
- 👤 Robert J Konrad
- 👤 Richard W Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:55
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/48; H01J29/485
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2185807A
Cited
FR869794A
Cited
US2604599A
Cited
DE893235C
Cited
GB721239A
Cited
US2852716A
Cited
US2891183A
Cited
US2784334A
Cited
US2833952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |