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US Patent: 2,713,246
Tracer Control Mechanism Having Independent Rate and Direction Control
Patentees: Albert H. Dall (exact or similar names) - Cincinnati, Hamilton County, OH Hans Fritschi (exact or similar names) - Amberley Village, Hamilton County, OH USPTO Classifications: 409/79, 91/36, 91/37, 91/40, 91/514, 91/517 Tool Categories: metalworking machines : profiling 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. 01, 1953 Granted: Jul. 19, 1955 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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