US2747816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canard type airplane and controls therefor
Assignee: Individual
•
Filing: 1950-05-11
•
Granted: 1956-05-29
•
Expires: 1970-05-11
Abstract
No abstract record available.
Inventors
- 👤 Ben O Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:15
CPC Classifications
B; B64; B64C; B64C39/00; B64C39/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR673713A
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US1836681A
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FR40203E
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US2156994A
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FR838630A
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FR852599A
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US2326819A
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GB576120A
Cited
US2373575A
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US2369832A
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US2401790A
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US2406588A
Cited
US2430793A
Cited
US2601962A
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US2582348A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |