Patent US2464663A successfully refreshed from Google Patents.
US2464663A
Expired / Lapsed
US
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Slotted wing for aircraft
Assignee: Individual
•
Filing: 1944-10-28
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Granted: 1949-03-15
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Expires: 1964-10-28
Abstract
No abstract record available.
Inventors
- 👤 Zingg Theodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:06
CPC Classifications
B; B64; B64C; B64C21/00; B64C21/02; B64C21/025; B64C2230/00; B64C2230/04; B64C2230/06; B64C2230/16; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB347051A
Cited
DE589059C
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US1630938A
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US1780298A
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US1766330A
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US1907160A
Cited
US1891650A
Cited
GB383821A
Cited
US1888452A
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US1993419A
Cited
US1957413A
Cited
US2376834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |