US2840045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for hydrodynamic machines
Assignee: Oilgear Co
•
Filing: 1956-08-08
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Granted: 1958-06-24
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Expires: 1976-08-08
Abstract
No abstract record available.
Inventors
- 👤 James K Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:22
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/12; F04B49/123; F04B49/128; F04B1/00; F04B1/04; F04B1/06; F04B1/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1822667A
Cited
US1961886A
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US2068859A
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US2198129A
Cited
US2324750A
Cited
US2571658A
Cited
US2604076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |