Patent US3940600A successfully refreshed from Google Patents.
US2963918A
Expired / Lapsed
US
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Chain or belt tensioning devices
Assignee: PERRY CHAIN Co Ltd
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Filing: 1959-07-27
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Granted: 1960-12-13
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Blakstad Nigel Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:19
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/0829; F16H7/0836; F16H2007/0802; F16H2007/0806; F16H2007/0863; F16H2007/0872; F16H2007/0874; F16H2007/0889; F16H2007/0891
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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |