US2631794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airfoil nose flap arrangement
Assignee: Individual
•
Filing: 1947-07-22
•
Granted: 1953-03-17
•
Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Douglas K Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:00
CPC Classifications
B; B64; B64C; B64C23/00; B60; B60V; B60V1/00; B60V1/11; B60V1/115; B64C9/00; B64C9/14; B64C9/146; B64C2230/00; B64C2230/04; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1003364A
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US1880019A
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US1880967A
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US1868832A
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DE586496C
Cited
US1819216A
Cited
US1855076A
Cited
US1986064A
Cited
GB488942A
Cited
US2241521A
Cited
US2390859A
Cited
US2427972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |