Patent US3748505A successfully refreshed from Google Patents.
Patent US2459807A successfully refreshed from Google Patents.
US2459807A
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Multiple tank fuel system with emergency pump to maintain required discharge pressure
Assignee: Individual
•
Filing: 1944-03-16
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Granted: 1949-01-25
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Expires: 1964-03-16
Abstract
No abstract record available.
Inventors
- 👤 Edward M Gavin
- 👤 Ralph E Grey
- 👤 Leslie L Aspelin
- 👤 George F Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:43
CPC Classifications
F; F02; F02B; F02B1/00; F02M; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; 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)
US1329997A
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US1532326A
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US2018639A
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US2024133A
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US2215469A
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US2330558A
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US2275471A
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US2296876A
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US2406854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-25 | 1952-07-26 | 1953-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-25 | 1956-07-26 | 1957-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-25 | 1960-07-26 | 1961-01-25 | $7700.00 | Window Closed / Lapsed |