US2809592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump or motor
Assignee: Cessna Aircraft Co
•
Filing: 1954-01-13
•
Granted: 1957-10-15
•
Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Wendell E Miller
- 👤 Leonard H Reimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:32
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044873A
Cited
GB659600A
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US2714856A
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US2695566A
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US2649740A
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US2756681A
Cited
US2702509A
Cited
US2707441A
Cited
FR1105262A
Cited
FR1121180A
Cited
FR1125659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |