Patent US2850986A successfully refreshed from Google Patents.
US2850986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial hydro-dynamic machine having opposed pistons
Assignee: Oilgear Co
•
Filing: 1955-11-07
•
Granted: 1958-09-09
•
Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Adolf R Grad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:54
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0035; F01B3/0044; F01B3/0052; F01B3/0055; F01B3/0064; F01B3/007; F01B3/0082; F01B3/0085; F01B3/10; F01B3/103; F01B3/106; F04; F04B; F04B1/00; F04B1/12; F04B1/122; F04B1/124; F04B1/20; F04B1/2014; F04B1/2042; F04B1/2078; F04B1/22; F04B1/26; F04B1/30; F04B1/32; F04B1/324; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/106; F04B49/00; F04B49/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |