US2681776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating rudder for aircraft
Assignee: Individual
•
Filing: 1950-07-08
•
Granted: 1954-06-22
•
Expires: 1970-07-08
Abstract
No abstract record available.
Inventors
- 👤 Ben O Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:19
CPC Classifications
B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR415631A
Cited
US1661114A
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US1827304A
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US1890059A
Cited
US2003206A
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US2191842A
Cited
US2156994A
Cited
US2369832A
Cited
US2401790A
Cited
US2430793A
Cited
US2601962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |