Patent US2745433A successfully refreshed from Google Patents.
US2745433A
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US
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Control valve for fluid pressure operated mechanisms
Assignee: Hydraulic Unit Specialties Co
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Filing: 1952-02-25
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Granted: 1956-05-15
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Expires: 1972-02-25
Abstract
No abstract record available.
Inventors
- 👤 Dana J Schneider
- 👤 Francis H Tennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:27
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/041; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F15B13/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87177; Y10T137/87185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2247140A
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US2247141A
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US2343689A
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US2477669A
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US2489435A
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US2586932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |