US2983278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically operated hydraulic servo valve
Assignee: Pneumo Dynamics Corp
•
Filing: 1956-12-26
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Granted: 1961-05-09
•
Expires: 1976-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard P Heintz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:08
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F15B13/0438; F15C; F15C3/00; F15C3/10; F15C3/14; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/08; F16K31/082; Y; Y10; Y10T; Y10T137/00; Y10T137/2278
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |