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US Patent: 2,835,172
Rotary Head Milling Attachment
Patentees: Orrin W. Barker (exact or similar names) - New Berlin, Waukesha County, WI Ralph E. Saving (exact or similar names) - Wauwatosa, Milwaukee County, WI Lloyd D. Libby (exact or similar names) - Minneapolis, MN USPTO Classifications: 29/26R, 408/124, 408/20, 408/88, 409/144, 409/199, 409/201, 409/211 Tool Categories: metalworking machines : milling machines : milling machine accessories Assignees: Kearney & Trecker Corp. - West Allis, Milwaukee County, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 13, 1955 Granted: May 20, 1958 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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