Inventor: Verschuren, Hendrikus Antonie Maria
Inventor: Aicardi, Domenico
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: Hillock, Verne Stone
Inventor: Asmus, Edward Richard Sr.
Inventor: Johnston, Walter Irwin
Inventor: Howard, Frederick Huber