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US2655326A
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Gust-alleviating flap system for aircraft
Assignee: Engineering & Res Corp
•
Filing: 1947-12-04
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Granted: 1953-10-13
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Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Fred E Weick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:45
CPC Classifications
B; B64; B64C; B64C17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US622398A
Cited
US672851A
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US2092424A
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US2286150A
Cited
US2234326A
Cited
FR862649A
Cited
US2400017A
Cited
US2416958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |