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US Patent: 138,623
Improvement in Hollow Augers
Patentee: Ozia Alvin Essig (exact or similar names) - Canton, OH USPTO Classifications: 30/495 Tool Categories: woodworking tools : hand drills : drill bits : hollow bits Assignees: None Manufacturer: Not known to have been produced Witnesses: A. Pontius M. Essig	Patent Dates: Applied: Feb. 19, 1873 Granted: May 06, 1873 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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