US3038500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot-master valves with pressure accumulators
Assignee: Parker Hannifin Corp
•
Filing: 1958-03-10
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Granted: 1962-06-12
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Expires: 1978-03-10
Abstract
No abstract record available.
Inventors
- 👤 Zdenek J Lansky
- 👤 Russell W Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:09
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F15B13/0431; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86381; Y10T137/87169; Y10T137/87193; Y10T137/87201; Y10T137/87209
Claims Analysis
Total Claims: 0
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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) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |