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US Patent: 131,946
Improvement in expansive bits
Patentee: Ellsworth Ford (exact or similar names) - Westville, CT USPTO Classifications: 408/194, 408/195, 408/212, 408/213 Tool Categories: woodworking tools : hand drills : drill bits : adjustable drill bits Assignees: None Manufacturer: Not known to have been produced Witnesses: Solon C. Kemon Thomas D. D. Ourand	Patent Dates: Granted: Oct. 08, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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