Inventor: Grisoni, Michel
Inventor: Lecoufle, Maurice
Inventor: Lecoufle, Maurice, Vacherot, Michel
Inventor: Lecoufle, Maurice, Vacherot, Michel
Inventor: Maurice Lecoufle, Michel Vacherot
Inventor: Maurice Lecoufle, Michel Vacherot
Inventor: Maurice Lecoufle, Michel Vacherot
Inventor: Maurice Lecoufle, Michel Vacherot