US2908224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable delivery pressure fluid engine
Assignee: Individual
•
Filing: 1954-08-20
•
Granted: 1959-10-13
•
Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 John W Houser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:34
CPC Classifications
F; F04; F04C; F04C3/00; F04C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US15173A
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US865891A
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US2353780A
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US2380886A
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US2525907A
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US2584426A
Cited
US2678003A
Cited
US2681046A
Cited
US2691349A
Cited
US2691348A
Cited
US2860828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |