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US Patent: 3,468,179
Recirculating ball worm drive
Patentees: Robert K. Sedgwick (exact or similar names) - Waukesha, Waukesha County, WI John J. Hughes (exact or similar names) - Greendale, Milwaukee County, WI USPTO Classifications: 74/409, 74/425, 74/441 Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking power transmission Assignees: Kearney & Trecker Corp. - West Allis, Milwaukee County, WI Manufacturer: Kearney & Trecker Corp. - West Allis, Milwaukee County, WI Witnesses: Unknown	Patent Dates: Applied: Mar. 26, 1968 Granted: Sep. 23, 1969 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Kearney Trecker Corp.

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