Patent US2885913A successfully refreshed from Google Patents.
US2885913A
Expired / Lapsed
US
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Shearing die and method of forming the same
Assignee: Armstrong World Industries Inc
•
Filing: 1956-09-26
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Granted: 1959-05-12
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Expires: 1976-09-26
Abstract
No abstract record available.
Inventors
- 👤 Richard F Lescallette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:29
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/20; B21D37/205; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425
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) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |