Patent US2962932A successfully refreshed from Google Patents.
US2962932A
Expired / Lapsed
US
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Gas discharge light shutter
Assignee: Individual
•
Filing: 1958-05-13
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Granted: 1960-12-06
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Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Edward K Kaprelian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:46
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/025; H01J61/12; G; G02; G02F; G02F1/00; G02F1/01; G02F1/17; G02F2203/00; G02F2203/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894042A
Cited
US2216220A
Cited
US2158968A
Cited
US2413940A
Cited
US2382939A
Cited
US2774903A
Cited
US2820918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |