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US Patent: 118,178
Improvement in Twist-Drills
Patentee: Benjamin Arnold (exact or similar names) - East Greenwich, RI USPTO Classifications: 408/226, 408/230 Tool Categories: woodworking tools : hand drills : drill bits : twist drill bits Assignees: None Manufacturer: Not known to have been produced Witnesses: James E. Arnold Frank H. Arnold	Patent Dates: Granted: Aug. 22, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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