Patent US2394431A successfully refreshed from Google Patents.
US2394431A
Expired / Lapsed
US
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Fuel supply system
Assignee: CURTIS PUMP CO
•
Filing: 1942-08-15
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Granted: 1946-02-05
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Expires: 1962-08-15
Abstract
No abstract record available.
Inventors
- 👤 Russell R Curtis
- 👤 Frederick W Heckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:19
CPC Classifications
B; B64; B64D; B64D37/00; B64D37/005; F; F02; F02B; F02B1/00; F02M; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388; Y; Y10; Y10T; Y10T137/00; Y10T137/4673; Y10T137/4807
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) | 1949-02-04 | 1949-08-06 | 1950-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-04 | 1953-08-06 | 1954-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-04 | 1957-08-06 | 1958-02-05 | $7700.00 | Window Closed / Lapsed |