Inventor: Hollingsworth, Donald
Inventor: Rudolph, Nathan H.
Inventor: Schutz, Juris Edgar
Inventor: Guldemond, deceased, Cornelius K.
Inventor: Guldemond, deceased, Cornelius K.
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm
Inventor: Carl George Klehm