Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Hull, George Edward
Inventor: Hull, George Edward
Inventor: Sahin-Georgiadou, Elisabeth
Inventor: Hull, George E.
Inventor: Sahin, Elisabeth
Inventor: Van Andel, Otto Jan Robert
Inventor: Van Andel, Otto Jan Robert
Inventor: Fielding, deceased, Hervey
Inventor: Herrick, Robert D.
Inventor: Mills, Wayne J., Hampton, Katherine L.
Inventor: Hofland, G. Jack
Inventor: Niedfeldt, Carl J.