US2993500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow sensitive directional control valve
Assignee: Vickers Inc
•
Filing: 1959-06-04
•
Granted: 1961-07-25
•
Expires: 1979-06-04
Abstract
No abstract record available.
Inventors
- 👤 Robinson James
- 👤 Court Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:12
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/24; F15B11/00; F15B11/08; F15B11/12; F15B11/121; F15B11/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2668; Y10T137/2688; Y10T137/2693; Y10T137/7722; Y10T137/7771
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2737196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |