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US Patent: 2,142,285
Hob and Method of Manufacture
Patentee: Harry Pelphrey (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 125/11.15, 407/23, 451/123, 451/37, 451/48 Tool Categories: metalworking machines : gear cutting tools Assignees: Michigan Tool Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 02, 1936 Granted: Jan. 03, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Michigan Tool Co.

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