Caterpillar Inc. designs, manufactures, and services construction and mining equipment, diesel and natural gas engines, industrial gas turbines, and diesel-electric locomotives for infrastructure, resource, and energy customers. The public company, founded in 1925 and headquartered in Irving, Texas, sells primarily through an independent worldwide dealer network and provides equipment financing. It operates through Construction Industries, Resource Industries, and Energy & Transportation segments, with shares traded on the NYSE and Euronext Paris.