Patent US1318978A successfully refreshed from Google Patents.
Patent US2544877A successfully refreshed from Google Patents.
US2544877A
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Bichromate sensitized photographic materials
Assignee: Eastman Kodak Co
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Filing: 1947-05-03
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Granted: 1951-03-13
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Expires: 1967-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert S Bryce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:12
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB228377A
Cited
US1981102A
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US2239284A
Cited
US2256390A
Cited
US2184310A
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US2376005A
Cited
GB573771A
Cited
US2476527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |