Patent US2622038A successfully refreshed from Google Patents.
US2622038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing deterioration of printing rollers
Assignee: Individual
•
Filing: 1948-11-15
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Granted: 1952-12-16
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Expires: 1968-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charlesworth Percy Allan
- 👤 Craven John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:30
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/005; B41N2207/00; B41N2207/02; B41N2207/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1657870A
Cited
US1763618A
Cited
US2168024A
Cited
US2268674A
Cited
US2312362A
Cited
US2385920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |