Patent US3457072A successfully refreshed from Google Patents.
US3457072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic element and process
Assignee: Eastman Kodak Co
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Filing: 1965-10-22
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Granted: 1969-07-22
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Ditzer Jr
- 👤 Fred W Spangler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/46; G03C1/49
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |