| Summary: | World War II brought a demand for piston rings for planes, tanks and trucks operating under tough conditions of desert heat and arctic cold. Engineers scrambled to solve the problems such demands presented. Ralph worked long hours developing ways to make the equipment more durable and efficient. To fulfill the demands of the Defense Department, the company built another plant and expanded their workforce. Use of this image is restrictred to projects related to Destination Indiana. IHS may not reproduce. Destination Indiana Ralph Teetor, Automotive Pioneer
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