Inventor: Kievit, Christa
Inventor: Kievit, Christa
Inventor: Clifton, Richard Paul
Inventor: Danziger, Gavriel
Inventor: Danziger, Gavriel
Inventor: Heinrich, Westhoff
Inventor: Westhoff, Heinrich
Inventor: Lommerse, Henry
Inventor: van der Zwet, Alexius Johannes Joseph
Inventor: Houbraken, Anna M. W. P.
Inventor: Houbraken, Anna M. W. P.
Inventor: Westhoff, Heinrich
Inventor: Crowther, Albert Timothy Alan, Tristram, David Ralph
Inventor: Houbraken, Anna M. W. P.
Inventor: Churchus, John William
Inventor: Alexander, Pauline