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US Patent: 3,422,724
Mechanism for Effecting Angular Orientation of a Machine Tool Spindle
Patentees: Frank Zankl (exact or similar names) - Milwaukee, Milwaukee County, WI Richard E. Stobbe (exact or similar names) - Greenfield, Milwaukee County, WI Clyde E. Mattson (exact or similar names) - Waukesha, Waukesha County, WI USPTO Classifications: 408/3, 409/231, 409/64, 483/34 Tool Categories: metalworking machines : milling machines metalworking machines : metalworking machine mechanisms Assignees: Kearney & Trecker Corp. - West Allis, Milwaukee County, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 21, 1966 Granted: Jan. 21, 1969 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Kearney & Trecker Co.

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