US2939284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic drive with integral sump
Assignee: Individual
•
Filing: 1958-10-08
•
Granted: 1960-06-07
•
Expires: 1978-10-08
Abstract
No abstract record available.
Inventors
- 👤 Gertz Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:03
CPC Classifications
G; G21; G21C; G21C7/00; G21C7/06; G21C7/08; G21C7/12; G21C7/16; F; F15; F15B; F15B15/00; F15B15/18; F15B9/00; F15B9/02; F15B9/04; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S60/00; Y10S60/916
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR544066A
Cited
US1948951A
Cited
US1836813A
Cited
US2049335A
Cited
US2127961A
Cited
US2676571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |