US2631244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system for x-ray screen image intensifiers
Assignee: Westinghouse Electric Corp
•
Filing: 1948-07-14
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Granted: 1953-03-10
•
Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 Richard L Longini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:15
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/023; G02B5/00; G02B5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2093288A
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US2055188A
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US2207867A
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US2363600A
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FR879245A
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US2288619A
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US2344043A
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US2346810A
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US2337722A
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |