Patent US2560841A successfully refreshed from Google Patents.
US2560841A
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US
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Hydraulic valve
Assignee: Fairey Aviation Co Ltd
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Filing: 1946-12-20
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Granted: 1951-07-17
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Expires: 1966-12-20
Abstract
No abstract record available.
Inventors
- 👤 Bishop James William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:23
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE213803C
Cited
US708990A
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US709491A
Cited
FR485210A
Cited
US1586345A
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US2091618A
Cited
US2151596A
Cited
US2252141A
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 |