Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: Ammerlaan, Johannes Hendrikus Adrianus
Inventor: Ammerlaan, Johannes Hendrikus Adrianus
Inventor: Ammerlaan, Johannes Hendrikus Adrianus
Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: Kievit, Christa
Inventor: Kievit, Christa
Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: van der Arend, Rene P. A.
Inventor: Ammerlaan, Johannes Hendrikus Adrianus
Inventor: Ammerlaan, Johannes Hendrikus Adrianus