Patent US2177635A successfully refreshed from Google Patents.
US2177635A
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US
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Photographic emulsion
Assignee: Eastman Kodak Co
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Filing: 1937-05-29
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Granted: 1939-10-31
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Expires: 1957-05-29
Abstract
No abstract record available.
Inventors
- 👤 Burt H Carroll
- 👤 Edward P Davey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:04
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29; C; C09; C09B; C09B23/00; C09B23/10; C09B23/107; C09B23/14; C09B23/145; C09B23/146
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) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |