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公开(公告)号:CA381584A
公开(公告)日:1939-05-23
申请号:CA381584D
Applicant: SHELL DEV
Inventor: YABROFF DAVID LOUIS , WHITE ELLIS R
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公开(公告)号:CA456601A
公开(公告)日:1949-05-10
申请号:CA456601D
Applicant: SHELL DEV
Inventor: WHITE ELLIS R , ESS PAUL R VAN
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公开(公告)号:CA456449A
公开(公告)日:1949-05-03
申请号:CA456449D
Applicant: SHELL DEV
Inventor: ESS PAUL R VAN , WHITE ELLIS R
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公开(公告)号:CA445514A
公开(公告)日:1947-12-09
申请号:CA445514D
Applicant: SHELL DEV
Inventor: WHITE ELLIS R , WALTERS ERNEST L
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公开(公告)号:CA412300A
公开(公告)日:1943-05-04
申请号:CA412300D
Applicant: YABROFF DAVID LOUIS , SHELL DEV , WHITE ELLIS R
Inventor: YABROFF DAVID LOUIS , WHITE ELLIS R
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