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US Patent: 2,622,489
Tracer Control Mechanism
Patentee: Erwin G. Roehm (exact or similar names) - Norwood, Hamilton County, OH USPTO Classifications: 409/129 Tool Categories: metalworking machines : milling machines metalworking machines : metalworking machine mechanisms Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 10, 1947 Granted: Dec. 23, 1952 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.

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