Inventor: van Duijn, Jan Mark
Inventor: Hansen, Hans A.
Inventor: Doyle, James, Ferguson, Louise
Inventor: Crawford, James
Inventor: Fransen, Marco J. W.
Inventor: Plattner, Anton
Inventor: Johnn Lee Thompson
Inventor: William Flemer, III
Inventor: William Flemer, III
Inventor: Albert J. Porter
Inventor: Albert Aspeslagh, August van Speybrouck
Inventor: Richard Wellington
Inventor: Vosters, James B.
Inventor: Reed, George M.
Inventor: Boer, Arie F. den
Inventor: Etter, Albert F.
Inventor: Etter, Albert F.
Inventor: Hansen, Carl A.