Patent US2676578A successfully refreshed from Google Patents.
US2676578A
Expired / Lapsed
US
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Fuel pump for free piston engines
Assignee: Cooper Bessemer Corp
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Filing: 1951-04-20
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Granted: 1954-04-27
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Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
- 👤 Robert P Ramsey
- 👤 Willard A Morain
- 👤 Charles M Bovard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:13
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1816157A
Cited
US2447513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |