Pierre Levasseur set up company known only by his name in Paris 1910, building propellers and, in 1913, aircraft designed by others. First of his own designs was PL I 2-seat biplane, followed by PL 2 torpedo-bomber made in small series. Almost all Levasseur products (PL 3 - 15, with variations) were powerful single-engined biplanes for French Navy (PL 6 fighter was Army). On failure of Lévy, LB 2AM was produced by Levasseur. Final design was PL 400 STOL observation monoplane (December 1939).