A Forklift truck (also calle a lift truck, a High/Low, a forklift, a stacker-truck or a sideloader) is a powered industrial truck used to lift and transport materials. The modern forklift truck was developed in the 1920s by various companies including the transmission manufacturing company Clark and the hoist company Yale & Towne Manufacturing. The forklift truck has since become an indispensable piece of equipment in manufacturing and warehousing operations.