Patent US2664708A successfully refreshed from Google Patents.
US2664708A
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Hydraulic control system
Assignee: Allis Chalmers Corp
•
Filing: 1950-03-07
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Granted: 1954-01-05
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Expires: 1970-03-07
Abstract
No abstract record available.
Inventors
- 👤 Emil F Norelius
- 👤 Toth Michael
- 👤 Rinkema David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:15
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H2708/00; F16H2708/02; F16H2708/06; Y; Y10; Y10S; Y10S74/00; Y10S74/02; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87048; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20024; Y10T74/20396; Y10T74/20474
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) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |