Inventor: Jacobs, Henricus Cornelius Maria
Inventor: Van Blokland, Robbert G. C.
Inventor: Meiland, Jacobus Hendrikus
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: Hoogervorst, Wilhemus A.