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US Patent: 958,112
Boring-Tool
Patentees: Thomas S. Halliwell (exact or similar names) - Denver, CO Henry B. Maschmeier (exact or similar names) - Denver, CO USPTO Classifications: 24/568, 408/206, 408/232 Tool Categories: woodworking tools : hand drills : drill bits : hollow bits Assignees: None Manufacturer: Not known to have been produced Witnesses: Chris Evans John Vaslie	Patent Dates: Applied: Dec. 14, 1909 Granted: May 17, 1910 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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