Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Pavlich, John C.
Inventor: Pavlich, John C.
Inventor: Van Andel, Otto Jan Robert
Inventor: Van Andel, Otto Jan Robert
Inventor: Grunewald, Theodorus P. M.
Inventor: Grunewald, Theodorus P. M.
Inventor: Grunewald, Theodorus P. M.
Inventor: Grunewald, Theodorus P. M.
Inventor: Grunewald, Theodorus P. M.
Inventor: Masuda, Tamotsu