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US Patent: 1,660,477
Radial Drilling Machine
Patentee: Conrad M. Conradson (exact or similar names) - Madison, Dane County, WI USPTO Classifications: 408/133, 408/237, 74/333, 74/473.1 Tool Categories: metalworking machines : drilling and boring : drill presses : radial drill presses Assignees: Joseph T. Ryerson & Son - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 24, 1920 Granted: Feb. 28, 1928 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Joseph T. Ryerson & Son

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