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US Patent: 2,012,047
Boring Head
Patentee: John R. Johnson (exact or similar names) - Rockford, Winnebago County, IL USPTO Classifications: 408/117, 408/124, 408/5, 74/665R Tool Categories: metalworking machines : drilling and boring : boring heads Assignees: Ingersoll Milling Machine Co. - Rockford, Winnebago County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 12, 1932 Granted: Aug. 20, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ingersoll Milling Machine Co.

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