US2440127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of producing propeller blades
Assignee: Curtiss Wright Corp
•
Filing: 1944-07-31
•
Granted: 1948-04-20
•
Expires: 1964-07-31
Abstract
No abstract record available.
Inventors
- 👤 Foster B Stulen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:25
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/78; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1927247A
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US2012389A
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US1909097A
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US2007776A
Cited
GB417232A
Cited
US2214338A
Cited
US2231772A
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US2263425A
Cited
US2350541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |