Inventor: Greyvenstein, Ockert F. C.
Inventor: Skotak, Jr., Chester
Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Skotak, Chester
Inventor: Membrey, Stephen, Jackson, Bryan
Inventor: Stemkens, Henricus G. W.
Inventor: Unger, Christiaan
Inventor: Cox, Denis Eric, Glazebrook, Janice Evelyn
Inventor: de Castro Filho, Estevam Emygdio