Patent US2879069A successfully refreshed from Google Patents.
US2879069A
Expired / Lapsed
US
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Drill chuck
Assignee: Individual
•
Filing: 1956-03-21
•
Granted: 1959-03-24
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Expires: 1976-03-21
Abstract
No abstract record available.
Inventors
- 👤 Richard L Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:36
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/12; B23B51/123; Y; Y10; Y10S; Y10S279/00; Y10S279/906; Y10T; Y10T279/00; Y10T279/17; Y10T279/17957; Y10T279/17965; Y10T279/34; Y10T279/3406; Y10T279/3412; Y10T279/3418; Y10T408/00; Y10T408/76; Y10T408/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |