US2547154A
Expired / Lapsed
US
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Controller for hydrodynamic machines
Assignee: Oilgear Co
•
Filing: 1946-01-24
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Granted: 1951-04-03
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Expires: 1966-01-24
Abstract
No abstract record available.
Inventors
- 👤 James K Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:13
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04B; F04B1/00; F04B1/04; F04B1/06; F04B1/07; F04B49/00; F04B49/10; F04B49/12; F04B49/123; F04B49/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |