US2865337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yaw damping system
Assignee: Douglas Aircraft Co Inc
•
Filing: 1955-09-02
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Granted: 1958-12-23
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Expires: 1975-09-02
Abstract
No abstract record available.
Inventors
- 👤 Paul A Dennis
- 👤 Dill Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:34
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808; B; B64; B64C; B64C13/00; B64C13/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2234326A
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US2396951A
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US2452599A
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US2619623A
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US2451263A
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US2662207A
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US2686285A
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US2678177A
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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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |