US3456956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting clamping chuck
Assignee: PMC Industries Inc
•
Filing: 1965-07-23
•
Granted: 1969-07-22
•
Expires: 1985-07-23
Abstract
No abstract record available.
Inventors
- 👤 Earle C Herbkersman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:10
CPC Classifications
B; B23; B23G; B23G1/00; B23G1/22; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1274; Y10T279/1291; Y10T279/19; Y10T279/1973
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1469360A
Cited
US2993701A
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US3241847A
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US3076662A
Cited
US3083024A
Cited
US3151871A
Cited
US3153250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |