US2912010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frictionlessly mounted fluid poppet valve with balanced dynamic fluid forces and static pressure forces
Assignee: RTX Corp
•
Filing: 1957-06-04
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Granted: 1959-11-10
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Expires: 1977-06-04
Abstract
No abstract record available.
Inventors
- 👤 Fredrick P Evans
- 👤 Lloyd C White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:22
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2708948A
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US2621676A
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US2747612A
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US2739613A
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US2746424A
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US2754843A
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US2765378A
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US2875784A
Cited
US2839079A
Cited
US2833308A
Cited
US2812775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |