US2914037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic pumping system
Assignee: Wilson Supply Co
•
Filing: 1957-09-23
•
Granted: 1959-11-24
•
Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Rufus B Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:42
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F15; F15B; F15B13/00; F15B13/02; F15B13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2048550A
Cited
US2377115A
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US2404796A
Cited
FR992937A
Cited
US2669972A
Cited
US2708912A
Cited
US2726642A
Cited
US2853057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |