Patent US2325931A successfully refreshed from Google Patents.
US2325931A
Expired / Lapsed
US
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Fuel feeding device for aircraft
Assignee: Individual
•
Filing: 1941-06-21
•
Granted: 1943-08-03
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Expires: 1961-06-21
Abstract
No abstract record available.
Inventors
- 👤 Avigdor Rifat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:34
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/02; F02M37/025; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-08-02 | 1947-02-01 | 1947-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-08-02 | 1951-02-01 | 1951-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-08-02 | 1955-02-01 | 1955-08-03 | $7700.00 | Window Closed / Lapsed |