Patent US2481678A successfully refreshed from Google Patents.
US2481678A
Expired / Lapsed
US
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Photoelectric exposure meter having connected movable galvanometer and calculator scales
Assignee: Eastman Kodak Co
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Filing: 1946-03-14
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Granted: 1949-09-13
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Expires: 1966-03-14
Abstract
No abstract record available.
Inventors
- 👤 Mihalyi Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:34
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/42; G01J1/4209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1620727A
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US2076481A
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US2070664A
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US2105255A
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US2245522A
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US2247763A
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US2358083A
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US2360256A
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US2358084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |