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US Patent: 2,209,562
Worm Element Lapping Machine
Patentee: Joseph C. Drader (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 451/210, 451/25 Tool Categories: metalworking machines : gear lapping machines Assignees: Michigan Tool Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 15, 1936 Granted: Jul. 30, 1940 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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