US2833299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve devices for controlling the flow of fluids
Assignee: Flight Refueling Inc
•
Filing: 1954-05-03
•
Granted: 1958-05-06
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Expires: 1974-05-03
Abstract
No abstract record available.
Inventors
- 👤 Marriette Graham Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:27
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; G; G05; G05D; G05D7/00; G05D7/005; G05D7/01; G05D7/0126; G05D7/0133; G05D7/014; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3476; Y10T137/7722; Y10T137/7781; Y10T137/7834
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US845063A
Cited
US1156657A
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US1777060A
Cited
US2181523A
Cited
US2409517A
Cited
US2676611A
Cited
US2681074A
Cited
US2675824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |