Patent US3986613A successfully refreshed from Google Patents.
US2289167A
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Cutting tool
Assignee: National Tube Co
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Filing: 1939-12-15
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Granted: 1942-07-07
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Expires: 1959-12-15
Abstract
No abstract record available.
Inventors
- 👤 Bannister Bryant
- 👤 George C Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:48
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/08; B23B5/12; B23B27/00; B23B27/10; B23B27/12; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5125; Y10T29/5126; Y10T407/00; Y10T407/12; Y10T407/19; Y10T407/1906; Y10T407/1928; Y10T407/193; Y10T82/00; Y10T82/25; Y10T82/2527; Y10T82/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-07-06 | 1946-01-05 | 1946-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-06 | 1950-01-05 | 1950-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-06 | 1954-01-05 | 1954-07-07 | $7700.00 | Window Closed / Lapsed |