Patent US2763448A successfully refreshed from Google Patents.
US2763448A
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US
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Aircraft wing leading edge construction
Assignee: North American Aviation Corp
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Filing: 1952-01-15
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Granted: 1956-09-18
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Expires: 1972-01-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert P Davie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:41
CPC Classifications
B; B64; B64C; B64C3/00; B64C3/38; B64C3/44; B64C3/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1317413A
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US1631259A
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US1540105A
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US1567531A
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US1766107A
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US1848368A
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US2378528A
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US2258490A
Cited
US2384933A
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US2323542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |