Patent US2725955A successfully refreshed from Google Patents.
US2725955A
Expired / Lapsed
US
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Lubricating means for valve mechanism of an internal combustion engine
Assignee: Bank of America Corp
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Filing: 1951-02-15
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Granted: 1955-12-06
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Expires: 1971-02-15
Abstract
No abstract record available.
Inventors
- 👤 Delmar G Roos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:21
CPC Classifications
F; F01; F01M; F01M9/00; F01M9/10; F01M9/102; F01M9/107; F02; F02F; F02F1/00; F02F1/24; F02F2001/244; F02F2001/245
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1823714A
Cited
US2018612A
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US2080293A
Cited
US2208750A
Cited
US2288831A
Cited
US2349203A
Cited
US2563699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |