Patent US2513304A successfully refreshed from Google Patents.
US2513304A
Expired / Lapsed
US
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Hydraulic pump unloading valve
Assignee: Individual
•
Filing: 1945-02-19
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Granted: 1950-07-04
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Expires: 1965-02-19
Abstract
No abstract record available.
Inventors
- 👤 Lloyd F Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/027; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2622; Y10T137/2625
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US726841A
Cited
US2015801A
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US2214817A
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US2241665A
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US2264375A
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US2313351A
Cited
US2279176A
Cited
US2316445A
Cited
US2342001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-03 | 1954-01-02 | 1954-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-03 | 1958-01-02 | 1958-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-03 | 1962-01-02 | 1962-07-04 | $7700.00 | Window Closed / Lapsed |