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US Patent: 449,135
Drill Chuck
Patentee:
Charles T. Pratt (exact or similar names) - New Hartford, Oneida County, NY

USPTO Classifications:
279/68

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

Assignees:
None

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

Witnesses:
Unknown

Patent Dates:
Applied: Jul. 31, 1890
Granted: Mar. 31, 1891

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Pratt Chuck Co.

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