Inventor: Koot, Johannes Adrianus Maria
Inventor: Koot, Johannes Adrianus Maria
Inventor: van Meuwen, Johannes Marinus
Inventor: Wezelenburg, Jr., Jan-Willem
Inventor: Wezelenburg, Jr., Jan-Willem
Inventor: Stemkens, Henricus G. W.
Inventor: Enthoven, Adrianus W. M.