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US Patent: 553,531
Drill-chuck
Patentee: George S. Long (exact or similar names) - Hartford, CT USPTO Classifications: 279/61 Tool Categories: metalworking machines : drilling and boring : drill presses : drill press chucks woodworking machines : wood drilling and boring : drill presses : drill press chucks Assignees: Pratt & Long Chuck Co. - Hartford, CT Manufacturer: Pratt & Weir Chuck Co. - Hartford, CT Witnesses: Henry J. Gillette Willard Eddy	Patent Dates: Applied: Feb. 18, 1890 Granted: Jan. 28, 1896 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Pratt & Weir Chuck Co.
Description: In January 1895, the Pratt & Long Chuck Co. was renamed to the Pratt & Weir Chuck Co.

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