Sturtevant patented the torque wrench in 1938 and became the first individual to sell torque wrenches .
Paul Allen Sturtevant -- a sales representative for the Cedar Rapids Engineering Company at that time -- was licensed by Chrysler to manufacture his invention .
sales representative patented the torque wrench in 1938 and became the first individual to sell torque wrenches .
Paul Allen Sturtevant -- a sales representative for the Cedar Rapids Engineering Company at that time -- was licensed by Chrysler to manufacture his invention .