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Patent US2433641A successfully refreshed from Google Patents.
US2433641A
Expired / Lapsed
US
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Aircraft with pusher type propeller for stabilizing and steering
Assignee: Individual
•
Filing: 1944-03-15
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Granted: 1947-12-30
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Expires: 1964-03-15
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:02
CPC Classifications
B; B64; B64C; B64C9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1230045A
Cited
US2043704A
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DE680813C
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US2256918A
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US2308802A
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US2382460A
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US2406506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-29 | 1951-06-30 | 1951-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-29 | 1955-06-30 | 1955-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-29 | 1959-06-30 | 1959-12-30 | $7700.00 | Window Closed / Lapsed |