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US Patent: 93,807
Improvement in Countersink and Bit
Patentee: William A. Clark (exact or similar names) - Woodbridge, CT USPTO Classifications: 408/191 Tool Categories: woodworking tools : hand drills : drill bits : countersinks Assignees: None Manufacturer: Not known to have been produced Witnesses: A. J. Tibbits J. H. Shumway	Patent Dates: Granted: Aug. 17, 1869 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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