申请人 |
THE PETROLEUM OIL AND GAS CORPORATION OF SOUTH AFRICA (PTY) LTD;KNOTTENBELT, CYRIL DAVID;TAYLOR, PATRICK OTTO;ADAMS, VERNON JEREMAY;NICHOLSON, VOLAN RICHARD |
发明人 |
KNOTTENBELT, CYRIL DAVID;TAYLOR, PATRICK OTTO;ADAMS, VERNON JEREMAY;NICHOLSON, VOLAN RICHARD |