Inventor: van Duijn, Jan Mark
Inventor: Mak, Niels Johannes Cornelis
Inventor: Hansen, Hans A.
Inventor: Mak, Niels Johannes Cornelis
Inventor: Oostveen, Cornelis A.
Inventor: Mak, Niels Johannes Cornelis
Inventor: Mak, Niels Johannes Cornelis
Inventor: Falstad, III, Clarence H.
Inventor: Falstad, III, Clarence H.
Inventor: van Aart, Marinus Adrianus Cornelis
Inventor: Zwetzig, Gretchen
Inventor: Conyers, James O.
Inventor: Van Der Kroft, Paul