Patent US2560813A successfully refreshed from Google Patents.
US2560813A
Expired / Lapsed
US
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Pressure fluid servomotor
Assignee: RTX Corp
•
Filing: 1948-06-17
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Granted: 1951-07-17
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Expires: 1968-06-17
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:36
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR640814A
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US1928144A
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US1934691A
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US2220339A
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US2227273A
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US2307910A
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US2262233A
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US2345531A
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US2393585A
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US2421726A
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US2472236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |