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US Patent: 993,352
Electric drill
Patentee:
William O. Duntley - Chicago, IL

USPTO Classifications:
173/141, 173/170, 173/217, 310/112, 310/83

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

Assignees:
Chicago Pneumatic Tool Co. - Chicago, IL

Manufacturer:
Chicago Pneumatic Tool Co. - Chicago, IL

Witnesses:
George A. Rees
S. E. Hibben

Patent Dates:
Applied: Jan. 20, 1905
Granted: May 30, 1911

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

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