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US Patent: 500,498
Expansive Bit
Patentee: Louis S. Hayden (exact or similar names) - Essex, CT USPTO Classifications: 408/175 Tool Categories: woodworking tools : hand drills : drill bits : adjustable drill bits Assignees: Alfred M. Wright - Essex, CT Manufacturer: Not known to have been produced Witnesses: G. L. Tucker Northam Wright	Patent Dates: Applied: Nov. 22, 1892 Granted: Jun. 27, 1893 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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