US2757232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light intensity controlling optical system
Assignee: RCA Corp
•
Filing: 1952-04-21
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Granted: 1956-07-31
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Expires: 1972-04-21
Abstract
No abstract record available.
Inventors
- 👤 Goodale Elmer Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:59
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/10; G01J1/20; G01J1/22; G02; G02B; G02B5/00; G02B5/005; H; H04; H04N; H04N23/00; H04N23/10; H04N23/50; H04N23/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1629974A
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US2391430A
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FR945960A
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US2510374A
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US2536866A
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US2607845A
Cited
US2531031A
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US2672072A
Cited
US2632370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |