US2863337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a curved die
Assignee: Hartnett Co R W
•
Filing: 1953-05-11
•
Granted: 1958-12-09
•
Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Edward M Ackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:40
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/20; B21D37/205; Y; Y10; Y10T; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8855; Y10T83/929; Y10T83/9372; Y10T83/9377
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1056805A
Cited
US1777285A
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US1962815A
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US2029567A
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US2430359A
Cited
US2458867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |