Patent US2823518A successfully refreshed from Google Patents.
US2823518A
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Aircraft fuel pumping system
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1953-11-19
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Granted: 1958-02-18
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Expires: 1973-11-19
Abstract
No abstract record available.
Inventors
- 👤 John F Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:21
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/02; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; B64D37/16; B64D37/34; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2599680A
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US2520967A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |