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Patents for William Robertson
Patents 1 - 9 of 9
First set of recordsLast set of records
758May 30, 1838S. KimballMode of Appying Friction to the Yarn-Beams of Power-Loomslooms
483,367Sep. 27, 1892W. RobertsonCementing-machine
639,773Dec. 26, 1899W. RobertsonTool-handletool handles
677,276Jun. 25, 1901W. RobertsonGrinding-machinegrinding machines
758,191Apr. 26, 1904W. RobertsonCoaling-station
811,094Jan. 30, 1906W. RobertsonMattress
822,153May 29, 1906W. RobertsonMaterial and cinder-pit elevator
856,808Jun. 11, 1907W. RobertsonEngineinternal combustion engines
1,032,430Jul. 16, 1912W. RobertsonDrill-pressdrill presses
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