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US Patent: 215,744
Improvement in Augers Auger Bit with Detachable Tip
Patentee: William Heyn (exact or similar names) - San Francisco, CA USPTO Classifications: 408/214, 408/241R Tool Categories: woodworking tools : hand drills : drill bits : auger bits Assignees: None Manufacturer: Not known to have been produced Witnesses: J. H. Tingmon Oscar A. Tolle	Patent Dates: Applied: Oct. 28, 1878 Granted: May 27, 1879 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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