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US Patent: 133,573
Improvement in Hollow Augers
Patentee: Martin L. Edwards (exact or similar names) - Salem, OH USPTO Classifications: 30/495 Tool Categories: woodworking tools : hand drills : drill bits : hollow bits Assignees: None Manufacturer: M. L. Edwards Co. - Salem, OH Witnesses: B. S. Ambler Peter Ambler	Patent Dates: Granted: Dec. 03, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm) "Vintage Machinery" entry for M. L. Edwards Co.

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