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US Patent: 2,135,894
Machine for forming spiral bevel gear cutters
Patentee: Ernest C. Head (exact or similar names) - Detroit, MI USPTO Classifications: 451/123, 451/149, 451/239, 451/247, 451/374, 451/47 Tool Categories: metalworking machines : grinders : sharpening machines Assignees: Goddard & Goddard Co., Inc. - Detroit, MI Manufacturer: Goddard & Goddard Co. - Detroit, MI Witnesses: Unknown	Patent Dates: Applied: Mar. 06, 1936 Granted: Nov. 08, 1938 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Goddard & Goddard Co.
Description: This machine grinds gear cutters with the special geometry covered in patent 2,135,893.

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