Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Skotak, Jr., Chester
Inventor: Skotak, Chester
Inventor: Timmermans, Wilhelmus, Timmermans-Peters, Wilhelmina
Inventor: Fairweather, Christopher
Inventor: de Castro Filho, Estevam Emygdio
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.