US3530670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportioning device for hydraulic system actuator
Assignee: CLARENCE C FAY
•
Filing: 1969-09-04
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Granted: 1970-09-29
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Expires: 1989-09-04
Abstract
No abstract record available.
Inventors
- 👤 Clarence C Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:12
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/06; F15B7/08; B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/20; B60T11/203; B60T11/206; B60T8/00; B60T8/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB742943A
Cited
US2754938A
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US2953936A
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US2995218A
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US3258298A
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US3278240A
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US3360938A
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US3370426A
Cited
US3371487A
Cited
US3406522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |