US2608934A
Expired / Lapsed
US
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Hydrodynamic machine
Assignee: Oilgear Co
•
Filing: 1945-10-27
•
Granted: 1952-09-02
•
Expires: 1965-10-27
Abstract
No abstract record available.
Inventors
- 👤 Ferris Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:41
CPC Classifications
F; F01; F01B; F01B13/00; F01B13/04; F01B13/06; F01B13/061; F01B13/063; F01B13/065; F01B1/00; F01B1/06; F01B1/0641; F01B1/0648; F01B1/0658; F01B1/0662; F01B1/0672; F03; F03C; F03C1/00; F03C1/02; F03C1/04; F03C1/0403; F03C1/0435; F03C1/0444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB220417A
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US2074068A
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US2069651A
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US2229715A
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US2273468A
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US2292181A
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US2345446A
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US2304903A
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US2420080A
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US2462931A
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US2484337A
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US2470220A
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US2391221A
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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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |