US2440526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous sheet material for the electrolytic formation of an azo dyestuff thereon
Assignee: RCA Corp
•
Filing: 1942-12-23
•
Granted: 1948-04-27
•
Expires: 1962-12-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:01
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US366078A
Cited
US423970A
Cited
US440953A
Cited
US168466A
Cited
US761310A
Cited
US1646296A
Cited
US1857230A
Cited
US1916947A
Cited
US1844199A
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US1880449A
Cited
US1970539A
Cited
US1892099A
Cited
US2063992A
Cited
US2008966A
Cited
US2112864A
Cited
US2108852A
Cited
US2080209A
Cited
US2173141A
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US2181533A
Cited
US2186850A
Cited
US2138572A
Cited
US2186732A
Cited
US2154918A
Cited
US2306471A
Cited
US2286662A
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US2309492A
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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) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |