Patent US3501976A successfully refreshed from Google Patents.
US3501976A
Expired / Lapsed
US
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Camshaft
Assignee: EARL A THOMPSON Manufacturing CO
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Filing: 1966-02-24
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Granted: 1970-03-24
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Expires: 1986-02-24
Abstract
No abstract record available.
Inventors
- 👤 Earl A Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:44
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/047; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245552A
Cited
US1582883A
Cited
US2015991A
Cited
US2127245A
Cited
US2051415A
Cited
US2199096A
Cited
US2773761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |