Inventor: Stemkens, Henricus Godefridus Wilhelmus
Inventor: Skotak, Jr., Chester
Inventor: Richards, Rodney W.
Inventor: Hofmann, Silvia
Inventor: Skotak, Chester
Inventor: Richards, Rodney W.
Inventor: de Castro Filho, Estevam Emygdio
Inventor: Ernest D. Williams