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公开(公告)号:US2798795A
公开(公告)日:1957-07-09
申请号:US43904554
申请日:1954-06-24
Applicant: SHELL DEV
Inventor: REHBEIN CHARLES A , MITCHELL WILLIAM A
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公开(公告)号:CA558353A
公开(公告)日:1958-06-03
申请号:CA558353D
Applicant: SHELL DEV
Inventor: REHBEIN CHARLES A , MITCHELL WILLIAM A
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