US2750858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double exposure prevention device
Assignee: Eastman Kodak Co
•
Filing: 1952-12-04
•
Granted: 1956-06-19
•
Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 Edgar S Marvin
- 👤 Harold L Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:26
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1289256A
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US1356583A
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US1477038A
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US1478318A
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US1588666A
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US2011567A
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US1696533A
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US1805424A
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US2229848A
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US2289800A
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US2637253A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-19 | 1959-12-19 | 1960-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-19 | 1963-12-19 | 1964-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-19 | 1967-12-19 | 1968-06-19 | $7700.00 | Window Closed / Lapsed |