Patent US2427045A successfully refreshed from Google Patents.
US2427045A
Expired / Lapsed
US
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Poppet valve tool
Assignee: Individual
•
Filing: 1944-05-09
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Granted: 1947-09-09
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Expires: 1964-05-09
Abstract
No abstract record available.
Inventors
- 👤 Nathan B Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:52
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/10; B; B25; B25B; B25B27/00; B25B27/14; B25B27/24; B25B27/26; F01L2303/00; F01L2303/01; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53561; Y10T29/53578
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317320A
Cited
US1434437A
Cited
US650186A
Cited
GB191400493A
Cited
US1383057A
Cited
US1439530A
Cited
GB194931A
Cited
US1573773A
Cited
US1695610A
Cited
US1738178A
Cited
US1730092A
Cited
US1760433A
Cited
US1779306A
Cited
US1791961A
Cited
US1877620A
Cited
US2245838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |