Inventor: de Jong, Cornelis Henricus Maria
Inventor: Mooney, Andrew R.
Inventor: Doyle, James, Ferguson, Louise
Inventor: Davis, Harold A.
Inventor: Plattner, Anton
Inventor: Platt, Graeme Charles
Inventor: Hollingsworth, Donald
Inventor: Rudolph, Nathan H.
Inventor: Edgar Norman Swane
Inventor: Carl George Klehm
Inventor: Carl George Klehm