Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Hoekstra-Arisz, Catharina Marie
Inventor: Quemard, Pascal
Inventor: Kolster, Peter Rudolf
Inventor: Arisz, Catharina M.
Inventor: van Leyssen, Hans
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: William A. Warriner
Inventor: J. Benjamin Williams
Inventor: David L. Armstrong
Inventor: David L. Armstrong