US2642045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid motor having piston actuated pilot valve
Assignee: Baker Hughes Holdings LLC
•
Filing: 1950-02-20
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Granted: 1953-06-16
•
Expires: 1970-02-20
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Potts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:13
CPC Classifications
F; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F01L25/063; F03; F03C; F03C1/00; F03C1/001; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US523064A
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US880737A
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US1025163A
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US2141731A
Cited
US2239715A
Cited
US2186970A
Cited
US2296647A
Cited
US2370068A
Cited
US2555018A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |