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US Patent: 2,992,565
Automatic Speed Change Mechanism
Patentees: John A. Hansen (exact or similar names) - Milwaukee, Milwaukee County, WI Kurt A. Riedel (exact or similar names) - Milwaukee, Milwaukee County, WI USPTO Classifications: 192/3.58, 74/334, 74/335, 74/346, 74/364, 74/365 Tool Categories: metalworking machines : milling machines metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms Assignees: Kearney & Trecker Corp. - West Allis, Milwaukee County, WI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 10, 1958 Granted: Jul. 18, 1961 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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