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US Patent: 1,339,409
Portable Boring and Grinding Device for Automotive Cylinders
Patentees: William S. Myers (exact or similar names) - Ashland, Boyd County, KY Amzy L. Smith (exact or similar names) - Ashland, Boyd County, KY USPTO Classifications: 408/2782 Tool Categories: metalworking tools : portable turning tools metalworking machines : drilling and boring : vertical boring mills metalworking machines : grinders : internal grinders Assignees: William S. Myers - Ashland, Boyd County, KY Amzy L. Smith - Ashland, Boyd County, KY C. R. Wilson - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 18, 1919 Granted: May 11, 1920 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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