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US Patent: 2,101,712
Tracer Mechanism for Duplicating Machines
Patentee: Einar K. Johansen (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 251/14, 251/3, 251/84, 91/37, 91/374 Tool Categories: metalworking machines : metalworking machine mechanisms Assignees: Clearing Machine Corp. - Chicago, Cook County, IL Manufacturer: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Witnesses: Unknown	Patent Dates: Applied: Jan. 27, 1937 Granted: Dec. 07, 1937 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.
Description: This patent number was seen on a Cincinnati Milling Machine Co. patent plate.

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