Patent US2272638A successfully refreshed from Google Patents.
US2272638A
Expired / Lapsed
US
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Method of color reproduction
Assignee: Interchemical Corp
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Filing: 1938-03-26
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Granted: 1942-02-10
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Expires: 1958-03-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/46; H04N1/56; H04N1/60; G; G03; G03B; G03B27/00; G03B27/72; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/36; G03C7/00; G03C7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-02-09 | 1945-08-11 | 1946-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-02-09 | 1949-08-11 | 1950-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-02-09 | 1953-08-11 | 1954-02-10 | $7700.00 | Window Closed / Lapsed |