FMC Corporation is an American chemical manufacturing company headquartered in Philadelphia, Pennsylvania, which originated as an insecticide producer and later diversified into other industries. The company was founded by chemist John Bean in 1883 as the Bean Spray Pump Company in Los Gatos, California, producing piston pumps for insecticides. In 1928, Bean Spray Pump purchased two companies: the Anderson-Barngrover Co. and Sprague-Sells Co. At this time the company changed its name to Food Machinery Corporation, but in 1948 changed that to Food Machinery & Chemical Corporation. In 1961, the name was changed again to FMC. In 1941 the company received a contract to design and build amphibious tracked landing vehicles for the United States Department of War, and afterwards the company continued to diversify its products. Later FMC produced the M113, one of the most widely used AFVs ever. FMC employs 7,000 people worldwide, and had gross revenues of US$2.8 billion in 2017.