Inventor: Brandsma, Christine
Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Willems, Rogier
Inventor: Willems, Rogier
Inventor: Willems, Rogier
Inventor: van der Hoorn, Antonius C. J.
Inventor: Van Andel, Otto Jan Robert
Inventor: Van Andel, Otto Jan Robert
Inventor: Herrick, Robert D.
Inventor: Mills, Wayne J., Hampton, Katherine L.
Inventor: Hofland, G. Jack
Inventor: Niedfeldt, Carl J.
Inventor: Rutenschroer, John C.