Inventor: Noodelijk, Robert
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beekenkamp, Annie Cornelia
Inventor: Noodelijk, Robert
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Growns, Digby James
Inventor: van den Dool, Peter
Inventor: Brands, Albrecht
Inventor: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Billeaud, III, Hugh J.