Patent US2511446A successfully refreshed from Google Patents.
US2511446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for aircraft
Assignee: Individual
•
Filing: 1945-06-12
•
Granted: 1950-06-13
•
Expires: 1965-06-12
Abstract
No abstract record available.
Inventors
- 👤 George B Scheer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:21
CPC Classifications
B; B64; B64C; B64C13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1304870A
Cited
US1134739A
Cited
US1377306A
Cited
GB130213A
Cited
US1702184A
Cited
US1759442A
Cited
US2330569A
Cited
US2277378A
Cited
US2366382A
Cited
US2360542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |