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US Patent: 2,481,642
Multiple Tool Head
Patentees:
Charles S. Bohmer (exact or similar names) - Chicago, Cook County, IL
Carl A. Grunschel (exact or similar names) - Park Ridge, Cook County, IL

USPTO Classifications:
74/665R, 74/813L

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

Assignees:
None

Manufacturer:
Chicago Quadrill Co. - Des Plaines, Cook County, IL

Witnesses:
none listed

Patent Dates:
Applied: Jul. 08, 1944
Granted: Sep. 13, 1949

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

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