De Laval Steam Turbine Co. was in business from before 1900 to 1955 or later, according mentions in print. Their 1902 turbine machinery catalog stated that De Laval built "steam turbine motors, steam turbine dynamos, steam turbine blowers, steam turbine pumps, high pressure steam turbine pumps, rotary fire engines, locomotive head light equipments, train lighting equipments, marine generating sets, launch turbines, etc." In 1921, the company built "steam turbines, centrifugal pumps and blowers, speed-reducing gears, and special centrifugal machinery."