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US2490174A
Expired / Lapsed
US
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Control servo unit-hydraulic actuator
Assignee: Bendix Aviation Corp
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Filing: 1947-05-29
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Granted: 1949-12-06
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Expires: 1967-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter Dorwin Teague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:11
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/12; B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US465730A
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US1480940A
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US1500685A
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US1908144A
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US2366382A
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US2317549A
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US2299430A
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US2412336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |