Inventor: Verschuren, Hendrikus Antonie Maria
Inventor: Aicardi, Domenico
Inventor: Workman, John Albert
Inventor: Russell, Evan L.
Inventor: Rasmussen, John Cadwalader
Inventor: Johnson, Sanford
Inventor: Johnston, Walter Irwin
Inventor: Prior, Basil E.
Inventor: Johnston, Walter Irwin
Inventor: Mallerin, Charles
Inventor: Johnston, Walter Irwin
Inventor: Grillo, Nicholas
Inventor: Proietti, Joseph
Inventor: Aicardi, Domenico
Inventor: Nicolas, Fannie, Nicolas, Jean H.
Inventor: Riesselmann, Karel
Inventor: Grullemans, John J.
Inventor: Alexander, George Edward
Inventor: Savely, James W.
Inventor: Hillock, Verne Stone