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US Patent: 54,069
Improvement in drill-stocks
Patentee: D. Frank Hartford (exact or similar names) - Boston, MA USPTO Classifications: 74/127 Tool Categories: woodworking tools : hand drills : spiral drills Assignees: Edmund Tarbell - Boston, MA Manufacturer: Not known to have been produced Witnesses: George R. Clarke Thomas William Clarke	Patent Dates: Granted: Apr. 17, 1866 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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