Inventor: Burton, Stephen
Inventor: de Boer, Petrus
Inventor: de Boer, Petrus
Inventor: Niekerk, Johan Van
Inventor: Burton, Stephen
Inventor: Burton, Stephen
Inventor: Burton, Stephen
Inventor: Dekker, Adrianus
Inventor: van Niekerk, Johan
Inventor: van Niekerk, Johan
Inventor: Hambali, Gregori G.
Inventor: Hambali, Gregori Garnadi, Knauss, Marianne E.