Inventor: van Langen, Gerard
Inventor: van Langen, Gerard
Inventor: van der Meer, Hans
Inventor: van der Meer, Hans
Inventor: van Langen, Gerard
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: van der Meer, Hans
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: Verduin, Harrie
Inventor: van der Meer, Hans
Inventor: Verduin, Harrie
Inventor: van der Meer, Hans
Inventor: van Veen, Wilhelmus Franciscus
Inventor: Smit, Obed Jacob
Inventor: Verschoor, Adrianus