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: de Jong, Cornelis Henricus Maria
Inventor: Mooney, Andrew R.
Inventor: Davis, Harold A.
Inventor: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Unger, Michael H.
Inventor: Unger, Michael H.
Inventor: Moolenaar, Alfred Nicol
Inventor: Platt, Graeme Charles
Inventor: Edgar Norman Swane