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US Patent: 2,419,726
Automatic Worm Gear Hobbing Machine
Patentee: Harry Pelphrey (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 409/15, 409/23 Tool Categories: metalworking machines : gear making machines Assignees: Michigan Tool Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 21, 1942 Granted: Apr. 29, 1947 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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