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US2884661A
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Method and apparatus for crankshaft construction
Assignee: Curtiss Wright Corp
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Filing: 1953-02-27
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Granted: 1959-05-05
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Expires: 1973-02-27
Abstract
No abstract record available.
Inventors
- 👤 Roy T Hurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:55
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; B; B29; B29C; B29C45/00; B29C45/14; F16C3/00; F16C3/04; F16C3/06; F16C33/208; F16C9/00; B29L; B29L2031/00; B29L2031/748; B29L2031/75; F16C2220/00; F16C2220/02; F16C2220/04; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2497914A
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US1692340A
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US2014225A
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US2103185A
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US2247995A
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US2326381A
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US2351454A
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US2334930A
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US2596993A
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US2666677A
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US2730003A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |