Inventor: Holtkamp, Jr., Reinhold
Inventor: Ranney, Thomas G.
Inventor: Stephens, Carroll Theodore
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