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US Patent: 1,378,642
Process and machine for making crank-shafts for engines, compressors, and the like
Patentee: Lucien I. Yeomans (exact or similar names) - Chicago, IL USPTO Classifications: 29/6.01, 29/888.08, 82/106 Tool Categories: metalworking machines : metal lathes : crankshaft lathes Assignees: Amalgamated Machinery Corp. - Chicago, IL Manufacturer: Amalgamated Machinery Corp. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Jun. 25, 1917 Granted: May 17, 1921 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Amalgamated Machinery Corp.

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