Inventor: Timmermans, Wilhelmus, Timmermans-Peters, Wilhelmina
Inventor: Fairweather, Christopher
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