US2440293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor equipped aerial device
Assignee: Autogiro Company of America
•
Filing: 1944-05-05
•
Granted: 1948-04-27
•
Expires: 1964-05-05
Abstract
No abstract record available.
Inventors
- 👤 Paul H Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:46
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/32; F42B10/48; F42B10/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1003082A
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US1884596A
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US2021470A
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US1880586A
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US1964016A
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US2181477A
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US2192492A
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US2217108A
Cited
US2324146A
Cited
US2329414A
Cited
US2334028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-27 | 1951-10-27 | 1952-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-27 | 1955-10-27 | 1956-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-27 | 1959-10-27 | 1960-04-27 | $7700.00 | Window Closed / Lapsed |