Inventor: Saul, Robert Mark
Inventor: Bremer, Hinrich
Inventor: Troelstra, Johan
Inventor: Bakhuijzen, Arie
Inventor: Houbraken, Anna M. W. P.
Inventor: Verhoef, Gijsbertus
Inventor: Schmulling, Markus
Inventor: Hollingsworth, Donald
Inventor: Espinosa, Gavin
Inventor: Rudolph, Nathan H.