-
公开(公告)号:CA479355A
公开(公告)日:1951-12-11
申请号:CA479355D
Applicant: SHELL DEV
Inventor: BARNETT BENJAMIN , RUST FREDERICK F , VAUGHAN WILLIAM E
公开(公告)号:CA479355A
公开(公告)日:1951-12-11
申请号:CA479355D
Applicant: SHELL DEV
Inventor: BARNETT BENJAMIN , RUST FREDERICK F , VAUGHAN WILLIAM E