sentences:  On 1 December 1937 in Lake Michigan, Max Nohl dived to with DESCO equipment, breaking the previous record of set by British divers in 1930.In World War II DESCO made hardhat diving gear and oxygen rebreathers for the US Navy.In 1946, DESCO was sold to Alfred Dorst, who expanded the company's product base of exclusively professional, commercial and military designs to supply a growing peacetime leisure market with water sports equipment.