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US2491167A
Expired / Lapsed
US
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Collet chuck
Assignee: Individual
•
Filing: 1946-03-19
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Granted: 1949-12-13
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Expires: 1966-03-19
Abstract
No abstract record available.
Inventors
- 👤 Charles E Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:11
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/202; B23B31/2012; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17487; Y10T279/17504; Y10T279/17991; Y10T279/34; Y10T279/3487
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US533733A
Cited
US611159A
Cited
US642235A
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US1714136A
Cited
GB295908A
Cited
US1953830A
Cited
US2337471A
Cited
US2358299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |