US2954052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure fluid control system and valve
Assignee: Cessna Aircraft Co
•
Filing: 1959-02-19
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Granted: 1960-09-27
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Expires: 1979-02-19
Abstract
No abstract record available.
Inventors
- 👤 Robert D Krehbiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:46
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; B; B66; B66C; B66C13/00; B66C13/18; F15; F15B; F15B13/00; F15B13/02; F15B13/04; B66C2700/00; B66C2700/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807231A
Cited
US1807191A
Cited
US2193736A
Cited
US2387777A
Cited
US2742880A
Cited
US2755741A
Cited
US2783742A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |