申请人 |
SHELL OIL COMPANY;SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;PITER, EDWARD, STEPHEN;PRITCHETT, WILLIAM, MICHAEL;SMITH, ROY, KEITH;ULBRICHT, WILBERT, RAY |
发明人 |
PITER, EDWARD, STEPHEN;PRITCHETT, WILLIAM, MICHAEL;SMITH, ROY, KEITH;ULBRICHT, WILBERT, RAY |