Patent US2666864A successfully refreshed from Google Patents.
US2666864A
Expired / Lapsed
US
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Image intensifier tube
Assignee: Westinghouse Electric Corp
•
Filing: 1950-01-20
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Granted: 1954-01-19
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Expires: 1970-01-20
Abstract
No abstract record available.
Inventors
- 👤 Richard L Longini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:44
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2193600A
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US2158853A
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US2198479A
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US2291406A
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US2305452A
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US2297478A
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US2358542A
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US2348045A
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US2501882A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |