Patent US2487860A successfully refreshed from Google Patents.
US2487860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating propeller blades
Assignee: Curtiss Wright Corp
•
Filing: 1946-10-08
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Granted: 1949-11-15
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Expires: 1966-10-08
Abstract
No abstract record available.
Inventors
- 👤 Louis H Enos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:45
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/78; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49332; Y10T29/49826; Y10T29/49893
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2231888A
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US2235032A
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US2394446A
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US2394445A
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US2293801A
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US2427785A
Cited
US2450440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |