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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 - 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:
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"Vintage Machinery" entry for Amalgamated Machinery Corp.

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