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US Patent: 1,772,082
Device for Assembling and Holding Piston Rings for Machining Operations
Patentee: Joseph H. Hoern (exact or similar names) - Saginaw, Saginaw County, MI USPTO Classifications: 279/2.19, 279/2.24, 409/903, 82/169 Tool Categories: metalworking machines : metalworking machine mechanisms Assignees: Wilcox-Rich Corp - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 29, 1929 Granted: Aug. 05, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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