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US2648776A
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US
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Optical system for image intensifiers
Assignee: Westinghouse Electric Corp
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Filing: 1951-03-22
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Granted: 1953-08-11
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Expires: 1971-03-22
Abstract
No abstract record available.
Inventors
- 👤 Jr William W Eitel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:24
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2401191A
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US2093288A
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US2158853A
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US2363600A
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US2555423A
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US2555545A
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US2523132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |