申请人 |
SHELL OIL COMPANY;SHELL CANADA LIMITED |
发明人 |
VINEGAR, HAROLD, J.;WELLINGTON, SCOTT, LEE;DE ROUFFIGNAC, ERIC, PIERRE;COLES, JOHN, MATTHEW;CARL, JR., FREDERICK, GORDON;MENOTTI, JAMES, LOUIS;HUNSUCKER, BRUCE, GERARD;COLE, ANTHONY, THOMAS;PRATT, CHRISTOPHER, ARNOLD |