Patent US2808518A successfully refreshed from Google Patents.
US2808518A
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Adjusting d. c. resistance of lightsensitive cells
Assignee: Eastman Kodak Co
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Filing: 1956-01-06
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Granted: 1957-10-01
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Expires: 1976-01-06
Abstract
No abstract record available.
Inventors
- 👤 John C Koonz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:55
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/12; G05B19/124; H; H04; H04N; H04N1/00; H04N1/23; G05B2219/00; G05B2219/20; G05B2219/23; G05B2219/23189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |