Inventor: Heemskerk, Harold
Inventor: Saul, Robert Mark
Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Bruinen, Edward
Inventor: Bruinen, Edward
Inventor: Bremer, Hinrich
Inventor: Spruit, Adrianus Theodorus
Inventor: Troelstra, Johan
Inventor: Bakhuijzen, Arie
Inventor: Verhoef, Gijsbertus
Inventor: Van Andel, Otto Jan Robert
Inventor: Van Andel, Otto Jan Robert
Inventor: Herrick, Robert D.
Inventor: Mills, Wayne J., Hampton, Katherine L.
Inventor: Espinosa, Gavin
Inventor: Hofland, G. Jack