Inventor: van Gaalen, Rene, de Boer, Huibert Anne
Inventor: van den Dool, Peter
Inventor: Brands, Albrecht
Inventor: de Boer, Huibert Anne
Inventor: de Boer, Huibert Anne, van Gaalen, Rene
Inventor: de Boer, Huibert Anne
Inventor: Ruigrok, Wouter
Inventor: Billeaud, III, Hugh J.