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US Patent: 382,670
Combined Screw Hold, Screw Driver and Counter Sink
Patentee: James C. Trovillion (exact or similar names) - Sanburn, IL USPTO Classifications: 81/453 Tool Categories: screwdrivers : screwdriver blades specialty tools : screw starters woodworking tools : hand drills : drill bits : countersinks Assignees: None Manufacturer: Not known to have been produced Witnesses: James  F. Whitehead John E. Scyster	Patent Dates: Granted: May 08, 1888 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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