Rolls-Royce produced a range of piston engine types for aircraft use in the first half of the 20th Century. Production of own design engines ceased in 1955 with the last versions of the Griffon, licensed production of Teledyne Continental Motors general aviation engines was carried out by the company in the 1960s and 1970s. Examples of Rolls-Royce aircraft piston engine types remain airworthy today with many more on public display in museums.