Patent US2454040A successfully refreshed from Google Patents.
US2454040A
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US
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Aircraft propeller
Assignee: General Electric Co
•
Filing: 1944-07-07
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Granted: 1948-11-16
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Expires: 1964-07-07
Abstract
No abstract record available.
Inventors
- 👤 Dalton William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/37; B64C11/00; B64C11/16; B64C11/20; B64C11/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190912846A
Cited
US958009A
Cited
US1424672A
Cited
US1462704A
Cited
GB256724A
Cited
US1715427A
Cited
FR656956A
Cited
US1742938A
Cited
FR687481A
Cited
US1899689A
Cited
US1995460A
Cited
US1927592A
Cited
US2021481A
Cited
US2216163A
Cited
US2163893A
Cited
US2245251A
Cited
US2371687A
Cited
GB556865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-16 | 1952-05-17 | 1952-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-16 | 1956-05-17 | 1956-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-16 | 1960-05-17 | 1960-11-16 | $7700.00 | Window Closed / Lapsed |