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US Patent: 2,193,917
Bit Extension
Patentees: Arnold R. Bone (exact or similar names) - Wilmington, OH Alfred P. Albrecht (exact or similar names) - Wilmington, OH USPTO Classifications: 279/52 Tool Categories: woodworking tools : hand drills : drill bit extensions Assignees: Irwin Auger Bit Co. - Wilmington, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 24, 1938 Granted: Mar. 19, 1940 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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