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US Patent: 904,851
Controller for electric drills
Patentees:
Henry J. Kimman - Cleveland, OH
William O. Duntley - Chicago, IL

USPTO Classifications:
200/457, 200/5R

Tool Categories:
woodworking machines : handheld power tools : handheld drills

Assignees:
Chicago Pneumatic Tool Co. - Chicago, IL

Manufacturer:
Chicago Pneumatic Tool Co. - Chicago, IL

Witnesses:
C. E. Walker
F. D. Johnson
Louis B. Erwin
S. E. Hibben

Patent Dates:
Applied: Jan. 22, 1906
Granted: Nov. 24, 1908

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Chicago Pneumatic Tool Co.

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