Inventor: van Heesbeen, Ad
Inventor: van Heesbeen, Ad
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Oostveen, Cornelis A.
Inventor: Oates, John David
Inventor: Babikow, Paul David
Inventor: Falstad, III, Clarence H.
Inventor: Falstad, III, Clarence H.
Inventor: van Aart, Marinus Adrianus Cornelis
Inventor: Oates, John David
Inventor: Oates, John David