Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Stevenson, John
Inventor: Freyre, Rosanna
Inventor: Freyre, Rosanna
Inventor: Sakazaki, Ushio
Inventor: Sakazaki, Ushio
Inventor: Van Andel, Otto Jan Robert
Inventor: Freyre, Rosanna
Inventor: Freyre, Rosanna
Inventor: Van Andel, Otto Jan Robert
Inventor: Ritchie, John Stanley, Ritchie, Kathleen Anne
Inventor: Herrick, Robert D.
Inventor: Mills, Wayne J., Hampton, Katherine L.
Inventor: Hofland, G. Jack
Inventor: Niedfeldt, Carl J.