US2548147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic transmission with variable displacement pump, throttled outflow from motor, and leakage compensation
Assignee: Oilgear Co
•
Filing: 1949-05-13
•
Granted: 1951-04-10
•
Expires: 1969-05-13
Abstract
No abstract record available.
Inventors
- 👤 Ferris Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:28
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1908534A
Cited
US2005731A
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US2032430A
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US2004522A
Cited
US2214552A
Cited
US2331218A
Cited
US2312213A
Cited
US2480403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |