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US Patent: 462,879
Drill Chuck
Patentee:
Charles T. Pratt - Clayville, Oneida County, NY

USPTO Classifications:
279/68

Tool Categories:
metalworking machines : drilling and boring : drill presses : drill press chucks

Assignees:
Pratt Chuck Co. - Clayville, Oneida County, NY

Manufacturer:
Pratt Chuck Co. - Frankfort, Herkimer County, NY

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 02, 1891
Granted: Nov. 10, 1891

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Pratt Chuck Co.

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