Inventor: Lommerse, Gerardus Adrianus Petronella, Lommerse, Hendrikus Petrus
Inventor: Kraan, Kees Jan
Inventor: Kraan, Kees Jan
Inventor: van Sambeek, Ellen
Inventor: van Sambeek, Ellen
Inventor: de Gruyter, Andre
Inventor: de Gruyter, Andre
Inventor: Kievit, Christa
Inventor: Kievit, Christa
Inventor: van Sambeek, Ellen