Patent US3026850A successfully refreshed from Google Patents.
US3026850A
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Fail-safe control for fluid pressure actuators
Assignee: Coleman Engineering Co Inc
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Filing: 1959-07-17
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Granted: 1962-03-27
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Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 John R Clifton
- 👤 Auldin D Nolan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:55
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26; F15B15/261; B; B30; B30B; B30B15/00; B30B15/28; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/30; F15B15/08; F15B15/14; F15B2015/1495
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1182967A
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US1545963A
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US1552011A
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US1616841A
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US1764988A
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GB288754A
Cited
US2394384A
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US2477108A
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US2892311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |