Patent US2864965A successfully refreshed from Google Patents.
US2864965A
Expired / Lapsed
US
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Electron gun for tubular beam
Assignee: Unisys Corp
•
Filing: 1956-04-05
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Granted: 1958-12-16
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Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Chao C Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:37
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2276806A
Cited
US2409224A
Cited
US2647220A
Cited
US2801361A
Cited
US2652513A
Cited
US2644906A
Cited
US2812467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |