US2823647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve system and apparatus for controlling eluid actuated servomotor
Assignee: Individual
•
Filing: 1954-03-11
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Granted: 1958-02-18
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Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Adolph F Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:36
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F15B11/022; D; D21; D21B; D21B1/00; D21B1/04; D21B1/06; D21B1/063; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/3056; F15B2211/30565; F15B2211/315; F15B2211/3157; F15B2211/31576; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/329; F15B2211/35; F15B2211/351; F15B2211/70; F15B2211/775; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1781369A
Cited
US1939150A
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US2375946A
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US2351317A
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US2356366A
Cited
US2661182A
Cited
US2645450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |