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US2663814A
Expired / Lapsed
US
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Electron-optical image intensifier
Assignee: Hartford National Bank and Trust Co
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Filing: 1951-10-15
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Granted: 1953-12-22
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Expires: 1971-10-15
Abstract
No abstract record available.
Inventors
- 👤 Teves Marten Cornelis
- 👤 Tol Taeke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:37
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/186; H01J29/00; H01J29/94; H01J31/00; H01J31/08; H01J31/50; H01J31/501
Claims Analysis
Total Claims: 0
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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) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |