Inventor: Meulenbroek, Egbertus Joseph
Inventor: Meulenbroek, Egbertus Joseph
Inventor: Meulenbroek, Egbertus Joseph
Inventor: Meulenbroek, Egbertus Joseph
Inventor: Hoogenraad, Mark Sebastiaan
Inventor: de Jongh, Johannes Adrianus Petrus
Inventor: Meulenbroek, Egbertus Joseph