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Patent US3516681A successfully refreshed from Google Patents.
US3516681A
Expired / Lapsed
US
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Hydraulic chuck or arbor
Assignee: Sandvik Inc
•
Filing: 1968-05-16
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Granted: 1970-06-23
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Expires: 1988-05-16
Abstract
No abstract record available.
Inventors
- 👤 John R Cox
- 👤 Joseph E Mix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:24
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0805; B; B23; B23B; B23B31/00; B23B31/02; B23B31/24; B23B31/30; B23B31/305; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1208; Y10T279/1216
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) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |