US2670646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Center drive chuck for crankshaft lathes
Assignee: WICKES BROS
•
Filing: 1950-12-15
•
Granted: 1954-03-02
•
Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 George A Kendall
- 👤 Alex W Chriscaden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:08
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/18; Y; Y10; Y10T; Y10T82/00; Y10T82/19; Y10T82/195; Y10T82/198
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2250631A
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US2236057A
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US2320983A
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US2354009A
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US2249240A
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US2354258A
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US2471162A
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US2544966A
Cited
US2511741A
Cited
US2509888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |