US2796884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid level control device
Assignee: Flight Refueling Inc
•
Filing: 1954-08-24
•
Granted: 1957-06-25
•
Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Jones Eric Cyril
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:27
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/32; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7413
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2145602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |