Inventor: Rogmans, Maria, Wilhelm, Hermann-Josef
Inventor: Hollingsworth, Donald
Inventor: Dayton, Daniel F., Emerson, Frank H.
Inventor: Rudolph, Nathan H.
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm