Patent US2578676A successfully refreshed from Google Patents.
US2578676A
Expired / Lapsed
US
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Apparatus for hydraulic motor control
Assignee: Joy Manufacturing Co
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Filing: 1947-04-09
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Granted: 1951-12-18
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Expires: 1967-04-09
Abstract
No abstract record available.
Inventors
- 👤 Maxwell O Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:18
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2157240A
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US2202216A
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US2205647A
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US2229419A
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US2339001A
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US2342450A
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US2380705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |