Patent US643991A successfully refreshed from Google Patents.
US643991A
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US
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Machine for cutting spiral and helical teeth in chuck-jaws.
Assignee: Individual
•
Filing: 1899-09-27
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Granted: 1900-02-20
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Expires: 1919-09-27
Abstract
No abstract record available.
Inventors
- 👤 George Benjamin Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:07
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/32; Y; Y10; Y10T; Y10T407/00; Y10T407/17; Y10T407/19; Y10T407/1906; Y10T407/1928; Y10T409/00; Y10T409/30; Y10T409/300056; Y10T409/300504; Y10T409/300616; Y10T82/00; Y10T82/14; Y10T82/148
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) | 1903-02-20 | 1903-08-22 | 1904-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-02-20 | 1907-08-22 | 1908-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-02-20 | 1911-08-22 | 1912-02-21 | $7700.00 | Window Closed / Lapsed |