Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Huisman, Marinus
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Inventor: Huisman, Marinus
Inventor: Van Andel, Otto Jan Robert
Inventor: Van Andel, Otto Jan Robert
Inventor: Kuijf, Hendricus Jacobus Maria
Inventor: Wakaiki, Shinri
Inventor: Herrick, Robert D.
Inventor: Mills, Wayne J., Hampton, Katherine L.
Inventor: Hofland, G. Jack
Inventor: Niedfeldt, Carl J.