Inventor: Greyvenstein, Ockert F. C.
Inventor: Vinson, Peter Edward
Inventor: de Jongh, Johannes Adrianus Petrus
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Membrey, Stephen, Jackson, Bryan
Inventor: Stemkens, Henricus G. W.
Inventor: Unger, Christiaan
Inventor: Unger, Michael Helmet
Inventor: Rother, Reinhard W.
Inventor: Bittner, Walter