Inventor: Noodelijk, Robert
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beekenkamp, Annie Cornelia
Inventor: Pavlich, John C.
Inventor: Noodelijk, Robert
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Pavlich, John C.
Inventor: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Van Blokland, Robbert G. C.
Inventor: Meiland, Jacobus Hendrikus