US2465581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane construction
Assignee: FERREL IND Inc
•
Filing: 1945-08-07
•
Granted: 1949-03-29
•
Expires: 1965-08-07
Abstract
No abstract record available.
Inventors
- 👤 Clyde B Ferrel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:06
CPC Classifications
B; B64; B64C; B64C39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18143E
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US1848578A
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US922972A
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FR397560A
Cited
FR396560A
Cited
GB191510481A
Cited
GB191505707A
Cited
GB360951A
Cited
US2132529A
Cited
US2183323A
Cited
US2395435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |