Patent US2999438A successfully refreshed from Google Patents.
US2999438A
Expired / Lapsed
US
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Automatic exposure control system
Assignee: Eastman Kodak Co
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Filing: 1958-12-05
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Granted: 1961-09-12
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Expires: 1978-12-05
Abstract
No abstract record available.
Inventors
- 👤 Nerwin Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:43
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/08; G03B7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2076481A
Cited
US2058531A
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US2418370A
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US2838985A
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US2906166A
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US2868095A
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US2913969A
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US2887026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |