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公开(公告)号:CA540965A
公开(公告)日:1957-05-14
申请号:CA540965D
Applicant: SHELL DEV
Inventor: TRESEDER RICHARD S , RAIFSNIDER PHILIP J
公开(公告)号:CA540965A
公开(公告)日:1957-05-14
申请号:CA540965D
Applicant: SHELL DEV
Inventor: TRESEDER RICHARD S , RAIFSNIDER PHILIP J