US2577852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting tappet
Assignee: Weatherhead Co
•
Filing: 1945-04-19
•
Granted: 1951-12-11
•
Expires: 1965-04-19
Abstract
No abstract record available.
Inventors
- 👤 George H Hufferd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:39
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245; F01L1/25; F01L1/252; F01L2309/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1623506A
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US1792836A
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US1977778A
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US1916191A
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US2109815A
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US2096257A
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US2290479A
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US2278963A
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US2325932A
Cited
US2404241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |