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US Patent: 871,086
Engine
Patentees: George H. Hayes (exact or similar names) - Philadelphia, PA William O. Duntley (exact or similar names) - Chicago, IL USPTO Classifications: 91/12, 91/174, 91/184 Tool Categories: industrial tools : pneumatic tools handheld power tools : handheld power drills Assignees: Chicago Pneumatic Tool Co. - Chicago, IL Manufacturer: Chicago Pneumatic Tool Co. - Chicago, IL Witnesses: Edwin Stearne Gertrude Crap Henry R. Kent Samuel E. Hibben	Patent Dates: Applied: Jun. 19, 1901 Granted: Nov. 12, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Chicago Pneumatic Tool Co.

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