US2772058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft wing with means to increase lift through control of air flow
Assignee: Individual
•
Filing: 1951-05-10
•
Granted: 1956-11-27
•
Expires: 1971-05-10
Abstract
No abstract record available.
Inventors
- 👤 Charles H Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C9/00; B64C9/14; B64C2009/143; B64C2230/00; B64C2230/06; B64C2230/20; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1841804A
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US1877474A
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GB478190A
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US2117607A
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FR846337A
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US2276522A
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US2261363A
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US2289704A
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US2368205A
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US2366751A
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US2466466A
Cited
US2507611A
Cited
US2668027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |