Patent US2489662A successfully refreshed from Google Patents.
US2489662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive photographic
Assignee: —
•
Filing: 1946-09-10
•
Granted: 1949-11-29
•
Expires: 1966-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:34
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1905438A
Cited
US1900877A
Cited
GB421727A
Cited
US1973886A
Cited
GB442522A
Cited
US2080041A
Cited
GB510598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-28 | 1953-05-30 | 1953-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-28 | 1957-05-30 | 1957-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-28 | 1961-05-30 | 1961-11-29 | $7700.00 | Window Closed / Lapsed |