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US Patent: 146,143
Improvement in drill-chucks
Patentee: Henry M. Olmsted (exact or similar names) - New Bedford, MA USPTO Classifications: 279/61 Tool Categories: woodworking tools : hand drills : drill chucks Assignees: Chandler Johnson - Hartford, CT Manufacturer: Not known to have been produced Witnesses: E. L. Barney H. M. Knowlton	Patent Dates: Applied: Nov. 12, 1873 Granted: Jan. 06, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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