US2497813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable pressure fluid servomotor and valve therefor
Assignee: CHAR LYNN CO
•
Filing: 1946-04-17
•
Granted: 1950-02-14
•
Expires: 1966-04-17
Abstract
No abstract record available.
Inventors
- 👤 Harold W Darr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:39
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/149; B; B60; B60C; B60C25/00; B60C25/14; B60C25/142; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0406; F15B15/1423; F15B15/1433; F15B15/20; F15B15/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US552798A
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US1645665A
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US1339426A
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US1380118A
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US1888834A
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US2073510A
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US2138915A
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US2320373A
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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) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |