Patent US2804055A successfully refreshed from Google Patents.
US2804055A
Expired / Lapsed
US
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Fluid motor with piston actuated valve means
Assignee: Individual
•
Filing: 1953-10-26
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Granted: 1957-08-27
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Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Martha H Hill
- 👤 Ernest C Chasser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:45
CPC Classifications
F; F01; F01B; F01B11/00; F01B11/007; F01L; F01L23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US917917A
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US1044725A
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US1094811A
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US1282841A
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US2057364A
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US2028938A
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US2220339A
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US2258493A
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US2346026A
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US2430019A
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US2658485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |