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US Patent: 2,673,714
Rock or masonry drill
Patentee: John M. Hargrave (exact or similar names) - Cincinnati, OH USPTO Classifications: 175/394, 175/397, 175/420.1 Tool Categories: metalworking machines : drilling and boring : drill bits woodworking tools : hand drills : drill bits Assignees: None Manufacturer: Cincinnati Tool Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Aug. 05, 1950 Granted: Mar. 30, 1954 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: Inventor Hargrave was the president of Cincinnati Tool Co.

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