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US Patent: 421,297
Adjustable Crank Pin
Patentee: James Mills (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 74/571.1, 74/600 Tool Categories: metalworking machines : metal shapers metalworking machines : metalworking machine mechanisms : metalworking power transmission Assignees: Albert S. Smith - Cincinnati, Hamilton County, OH Ellen Mills - Cincinnati, Hamilton County, OH Manufacturer: Smith & Mills Co. - Cincinnati, Hamilton County, OH Witnesses: James H. Layman Francis M. Biddle Harry Weruker Francis B. James	Patent Dates: Applied: Sep. 11, 1889 Granted: Feb. 11, 1890 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Smith & Mills Co.

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