Inventor: de Ruyver, Kurt
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: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Talmadge, Paul A.
Inventor: Hartley, Richard R., Hartley, Kathleen R.
Inventor: Fay E. Triplett
Inventor: Luther R. Stohl
Inventor: Fujihara, Paul K.