Patent FR524846A successfully refreshed from Google Patents.
Patent US2492720A successfully refreshed from Google Patents.
US2492720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drive and speed control means therefor
Assignee: Oilgear Co
•
Filing: 1945-06-11
•
Granted: 1949-12-27
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Tyler Ransom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/47
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1656544A
Cited
GB191119452A
Cited
GB222647A
Cited
DE519686C
Cited
US2255963A
Cited
US2192539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |