Patent US3318201A successfully refreshed from Google Patents.
US3318201A
Expired / Lapsed
US
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Rotary hydraulic actuator with improved sealing means
Assignee: William Blake and Co Inc
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Filing: 1965-02-02
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Granted: 1967-05-09
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Expires: 1985-02-02
Abstract
No abstract record available.
Inventors
- 👤 William L Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:27
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/54; F16J15/545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1942705A
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US2665151A
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US2684262A
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US2954012A
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US2966144A
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US3083975A
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GB936309A
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US3053232A
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US3128679A
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US3232185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-08 | 1970-11-07 | 1971-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-08 | 1974-11-07 | 1975-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-08 | 1978-11-07 | 1979-05-09 | $7700.00 | Window Closed / Lapsed |