Inventor: van der Velden, Josephus M.
Inventor: Ranney, Thomas G.
Inventor: Ranney, Thomas G.
Inventor: Ranney, Thomas G.
Inventor: Fleuren, Henricus Marie Gerardus Carolus
Inventor: Schoenmakers, Kees
Inventor: Cornelis, Daniel
Inventor: Bradford, Virginia
Inventor: McGuire, Orvid E.
Inventor: Barcafer, Ellis H.
Inventor: Clarke, Walter B.
Inventor: Clarke, Walter B.
Inventor: Clarke, Walter B.
Inventor: Grullemans, John J.