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: Morrow, Robert William
Inventor: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Riley, Rodney J.
Inventor: Stemkens, Henricus G. W.
Inventor: Enthoven, Adrianus W. M.
Inventor: Whiting, Hubert F.
Inventor: McMaugh, Peter E., Whiting, Hubert F.