US3379100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic rotary actuator with fail-safe locking means
Assignee: Houdaille Industries Inc
•
Filing: 1965-07-07
•
Granted: 1968-04-23
•
Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Rumsey Rollin Douglas
- 👤 John M Perhach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/20; F15B15/26; F15B15/262; F15B15/08; F15B15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3203513A
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US3179018A
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US3150571A
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US3286602A
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US3267818A
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US3262522A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |