US2690165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam engine with cam actuated valves
Assignee: YUBA Manufacturing Co
•
Filing: 1952-03-28
•
Granted: 1954-09-28
•
Expires: 1972-03-28
Abstract
No abstract record available.
Inventors
- 👤 Robert L Harris
- 👤 Lothrop Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:07
CPC Classifications
F; F01; F01L; F01L31/00; F01L31/08; F01L31/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE162752C
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US995384A
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US1943118A
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US2009745A
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US2020923A
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US2528627A
Cited
US2513982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |