Inventor: de Boer, Petrus
Inventor: Noodelijk, Robert
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: de Boer, Petrus
Inventor: Beers, Catharina Maria
Inventor: Beekenkamp, Annie Cornelia
Inventor: Noodelijk, Robert
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Sahin-Georgiadou, Elisabeth
Inventor: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Sahin, Elisabeth
Inventor: Van Andel, Otto Jan Robert
Inventor: Van Andel, Otto Jan Robert