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US Patent: 2,161,268
Conoidal Bit Cutting Machine
Patentee: William F. Zimmermann (exact or similar names) - Maplewood, Essex County, NJ USPTO Classifications: 409/193, 409/198, 409/57 Tool Categories: metalworking machines : gear making machines : gear hobbing machines Assignees: Gould & Eberhardt - Newark, Essex County, NJ Manufacturer: Gould & Eberhardt - Newark, Essex County, NJ Witnesses: Unknown	Patent Dates: Applied: Aug. 14, 1937 Granted: Jun. 06, 1939 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Gould & Eberhardt

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