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Patent US2521093A successfully refreshed from Google Patents.
US2521093A
Expired / Lapsed
US
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Camera with photoelectric exposure control having photocell shutters connected to camera adjusting means
Assignee: Individual
•
Filing: 1948-05-26
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Granted: 1950-09-05
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Expires: 1968-05-26
Abstract
No abstract record available.
Inventors
- 👤 Rath Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:53
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2000037A
Cited
US2047257A
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US2132549A
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US2285761A
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US2330877A
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US2407917A
Cited
US2354544A
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US2413017A
Cited
US2411486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |