Patent US2571397A successfully refreshed from Google Patents.
US2571397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing printing plates
Assignee: Individual
•
Filing: 1946-02-12
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Granted: 1951-10-16
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Expires: 1966-02-12
Abstract
No abstract record available.
Inventors
- 👤 Wells Marjorie Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
B; B41; B41C; B41C3/00; B41C3/06; B29; B29C; B29C33/00; B29C39/00
Claims Analysis
Total Claims: 0
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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) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |