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US Patent: 2,139,173
Control Circuit for Broaching Machines
Patentees: Millard Romaine (exact or similar names) - Cincinnati, Hamilton County, OH Erwin G. Roehm (exact or similar names) - Norwood, Hamilton County, OH USPTO Classifications: 91/443, 91/446, 91/461 Tool Categories: metalworking machines : broaching machines metalworking machines : machine tool controls metalworking machines : metalworking machine mechanisms : hydraulic apparatus Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 01, 1933 Granted: Dec. 06, 1938 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: Original application filed 01 Mar. 1933, now patent #2,063,756. Divided and this application filed 31 Mar., 1936.

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