US2462534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic elements
Assignee: EIDP Inc
•
Filing: 1946-03-29
•
Granted: 1949-02-22
•
Expires: 1966-03-29
Abstract
No abstract record available.
Inventors
- 👤 Murray Otis Willard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:22
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C5/00; G03C5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB163349A
Cited
US1631421A
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GB212484A
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US1537939A
Cited
GB292990A
Cited
GB322007A
Cited
US1942852A
Cited
US2319080A
Cited
US2271234A
Cited
US2379373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |