Inventor: Greyvenstein, Ockert F. C.
Inventor: de Ruyver, Kurt
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Membrey, Stephen, Jackson, Bryan
Inventor: Stemkens, Henricus G. W.
Inventor: Unger, Christiaan
Inventor: Talmadge, Paul A.
Inventor: Unger, Michael Helmet
Inventor: Rother, Reinhard W.