Patent US2883550A successfully refreshed from Google Patents.
US2883550A
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US
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Double window phosphors and circuits therefor
Assignee: Isomet Corp
•
Filing: 1953-08-10
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Granted: 1959-04-21
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Expires: 1973-08-10
Abstract
No abstract record available.
Inventors
- 👤 Ruderman Irving Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:47
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2349754A
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US2508772A
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US2389935A
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US2550107A
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US2730626A
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US2629069A
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US2517404A
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US2537373A
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US2711482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |