US2928968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube switching grid support system
Assignee: Paramount Pictures Corp
•
Filing: 1959-02-27
•
Granted: 1960-03-15
•
Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
- 👤 Kenneth A Hoagland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:29
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/80; H01J29/803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2508001A
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US2562163A
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US2827584A
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US2832911A
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US2821644A
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US2820166A
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US2824988A
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US2793319A
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US2847595A
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US2882430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |