Inventor: van Duijn, Jan Mark
Inventor: Hansen, Hans A.
Inventor: Jacobs, Henricus Cornelius Maria
Inventor: Stommel, John R., Griesbach, Robert J.
Inventor: Stommel, John R., Griesbach, Robert J.
Inventor: Griesbach, Robert J., Stommel, John R.
Inventor: Crawford, James
Inventor: Fransen, Marco J. W.
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.
Inventor: Bourgondien, Cornelium J. Van
Inventor: Frazee, Earl Nichols