Patent US2590888A successfully refreshed from Google Patents.
US2590888A
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Control valve means for fluidactuated servomotors
Assignee: Individual
•
Filing: 1947-10-02
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Granted: 1952-04-01
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Expires: 1967-10-02
Abstract
No abstract record available.
Inventors
- 👤 Glenn T Randol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86839; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18152; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US312126A
Cited
GB190319564A
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US868745A
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US1075733A
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US918918A
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US1256602A
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US1511656A
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FR579740A
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US1740877A
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US2272095A
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US2246379A
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US2258068A
Cited
US2421194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |