US3042005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic pressure feedback servo valve
Assignee: HYDRAULIC RES AND Manufacturing Co
•
Filing: 1959-04-28
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Granted: 1962-07-03
•
Expires: 1979-04-28
Abstract
No abstract record available.
Inventors
- 👤 Samuel A Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:21
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86598
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2550723A
Cited
US2823689A
Cited
US2931389A
Cited
US2889815A
Cited
US2972338A
Cited
US2926696A
Cited
US2945478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |