Inventor: Danziger, Gavriel
Inventor: van Duijn, Jan Mark
Inventor: Hansen, Hans A.
Inventor: Hull, George Edward
Inventor: Hull, George Edward
Inventor: Danziger, Gavriel
Inventor: Hull, George E.
Inventor: Heinrich, Westhoff
Inventor: Crawford, James
Inventor: Westhoff, Heinrich
Inventor: Lommerse, Henry
Inventor: Houbraken, Anna M. W. P.