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公开(公告)号:CA554508A
公开(公告)日:1958-03-18
申请号:CA554508D
Applicant: SHELL DEV
Inventor: CLEAR CHARLES G , CLAIR JACK B ST , MARSHALL JOHN A
公开(公告)号:CA554508A
公开(公告)日:1958-03-18
申请号:CA554508D
Applicant: SHELL DEV
Inventor: CLEAR CHARLES G , CLAIR JACK B ST , MARSHALL JOHN A