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US Patent: 310,987
Drill Chuck
Patentee:
James S. Church (exact or similar names) - Milwaukee, Milwaukee County, WI

USPTO Classifications:
279/60, 279/64

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

Assignees:
James S. Church - Milwaukee, Milwaukee County, WI
George M. Hinkley - Milwaukee, Milwaukee County, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 04, 1884
Granted: Jan. 20, 1885

Patent Pictures:
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