factory at
Courbevoie, Paris, to build light aircraft. In 1933-34 the
company built its first fighter aircraft, the Bloch 130, the
first flight of this prototype
M.B.150
being made on 29 June 1934.
Production Bloch 131s entered service in 1938. Subsequent
production included the Bloch 151 /152/155 monoplane
fighter, Bloch 175 light bomber,
174/175
and Bloch MB 200
and MB 210 bomber aircraft. Nationalization of the French aircraft industry in 1937 combined the Bleriot and Bloch
companies as Societe Nationale de Constructions Aeronautiques
de Sud-Ouest, with Marcel Bloch as managing
director.