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US Patent: 1,153,311
Tapping-machine
Patentee: John Emil Johnson (exact or similar names) - Jamestown, NY USPTO Classifications: 470/181, 476/16, 476/26 Tool Categories: metalworking machines : drilling and boring : tapping machines Assignees: Rickert-Shafer Co. - Erie, PA Manufacturer: Rickert-Shafer Co. - Erie, PA Witnesses: Arthur W. Uttel H. A. Sandberg	Patent Dates: Applied: Jun. 08, 1914 Granted: Sep. 14, 1915 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Rickert-Shafer Co.

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