Patent US2857009A successfully refreshed from Google Patents.
US2857009A
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US
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Hydraulic power unit for tractors equipped with power steering and power operated implements
Assignee: Motors Liquidation Co
•
Filing: 1952-09-13
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Granted: 1958-10-21
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Expires: 1972-09-13
Abstract
No abstract record available.
Inventors
- 👤 William J Adams
- 👤 Edward R Fryer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:02
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/26; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86059
Claims Analysis
Total Claims: 0
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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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |