US2906540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated chucks
Assignee: BUTTERWORTH BRITISH AUTOMATIC
•
Filing: 1956-07-25
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Granted: 1959-09-29
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Butterworth Harold
- 👤 Bolingbroke Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:16
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/207; B23B31/2072; B23B2270/00; B23B2270/02; B23B2270/025; Y; Y10; Y10T; Y10T279/00; Y10T279/12
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |