Inventor: Hendricks, William
Inventor: Glenn, Michael M.
Inventor: Stemkens, Henricus G. W.
Inventor: Enthoven, Adrianus W. M.
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