Patent US2804828A successfully refreshed from Google Patents.
US2804828A
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Axial type hydrocynamic machine
Assignee: Oilgear Co
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Filing: 1953-10-26
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Granted: 1957-09-03
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Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Adolf R Grad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:16
CPC Classifications
F; F04; F04B; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/106; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0055; F01B3/0082; F01B3/0085; F01B3/10; F01B3/103; F01B3/106
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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |