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US Patent: 2,392,819
Gear Grinding Machine
Patentees: Ivor J. Gruenberg (exact or similar names) - Pleasant Ridge, Oakland Count, MI Samuel G. Brady (exact or similar names) - Royal Oak, Oakland County, MI USPTO Classifications: 409/3, 451/15, 451/237, 451/47, 451/900 Tool Categories: metalworking machines : grinders : gear grinding machines Assignees: Gear Grinding Machine Co. - Hamtramck, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 24, 1944 Granted: Jan. 15, 1946 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Gear Grinding Machine Co.

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