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US Patent: 2,042,379
Metal Working Apparatus
Patentees: John S. Barnes (exact or similar names) - Rockford, Winnebago County, IL Paul R. Guirl (exact or similar names) - Rockford, Winnebago County, IL USPTO Classifications: 318/374, 408/11, 408/12, 408/13, 408/42, 86/49 Tool Categories: metalworking machines : metalworking machine mechanisms Assignees: W. F. & John Barnes Co. - Rockford, Winnebago County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 14, 1931 Granted: May 26, 1936 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for W. F. & John Barnes Co.

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