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US Patent: 323,178
Drill-chuck
Patentee: William Mason (exact or similar names) - New Haven, CT USPTO Classifications: 279/59, 279/69 Tool Categories: metalworking machines : drilling and boring : drill presses : drill press chucks woodworking machines : wood drilling and boring : drill presses : drill press chucks Assignees: None Manufacturer: Not known to have been produced Witnesses: Joseph C. Earle John E. Earle	Patent Dates: Applied: Jan. 12, 1885 Granted: Jul. 28, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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