US3530896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic power actuator and pilot valve unit assembly
Assignee: Individual
•
Filing: 1968-04-25
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Granted: 1970-09-29
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Expires: 1988-04-25
Abstract
No abstract record available.
Inventors
- 👤 Marvin E Whiteman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:43
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/28; F15B15/2807; F01; F01L; F01L23/00; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52408; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/8667; Y10T137/86694; Y10T137/86702; Y10T137/8671
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |