Inventor: Rogmans, Maria, Wilhelm, Hermann-Josef
Inventor: Kools, Cornelius
Inventor: Murray, Kenneth W.
Inventor: Hollingsworth, Donald
Inventor: Rudolph, Nathan H.
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm