Inventor: van Andel, Jacob
Inventor: Hilverda, Jan J.
Inventor: van Andel, Jacob
Inventor: Geers, Jr., Hermann
Inventor: Olij, Huibert W.
Inventor: Hilverda, Jan J.
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: Hilverda, Jan J.
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: van Andel, Jacob
Inventor: van Andel, Jacob
Inventor: Hubertus van Veen, Johannes W.
Inventor: van Andel, Jacob