申请人 |
BHP BILLITON SA LIMITED;DE KOCK, SANETTE H.;BARNARD, PAUL;BOWKER, CLINT;STRAUSS, HANNES;VAN BUUREN, CRAIG;BATTY, JOHN;DU PLESSIS, CHRIS |
发明人 |
DE KOCK, SANETTE H.;BARNARD, PAUL;BOWKER, CLINT;STRAUSS, HANNES;VAN BUUREN, CRAIG;BATTY, JOHN;DU PLESSIS, CHRIS |