US2965059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning tool
Assignee: Calumet and Hecla Inc
•
Filing: 1956-05-21
•
Granted: 1960-12-20
•
Expires: 1976-05-21
Abstract
No abstract record available.
Inventors
- 👤 Henry L Terwilliger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:08
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/14; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5147; Y10T29/5178
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1705957A
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US1631641A
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US2030818A
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US2325522A
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US2449247A
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GB613486A
Cited
US2490343A
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US2645000A
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US2682848A
Cited
US2682849A
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US2686440A
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US2744307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |