Patent US2689740A successfully refreshed from Google Patents.
US2689740A
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Collet structure
Assignee: Modern Collet & Machine Co
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Filing: 1952-03-17
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Granted: 1954-09-21
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Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 Albert A Parigian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:34
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/202; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17418; Y10T279/17452; Y10T279/19; Y10T279/1986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2155019A
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US2161939A
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US2219008A
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US2228337A
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US2551077A
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US2548978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |