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公开(公告)号:US2891851A
公开(公告)日:1959-06-23
申请号:US67171557
申请日:1957-07-15
Applicant: SHELL DEV
Inventor: RAYMOND BAILEY DENIS , HERVEY DANIELS PHILIP
公开(公告)号:US2891851A
公开(公告)日:1959-06-23
申请号:US67171557
申请日:1957-07-15
Applicant: SHELL DEV
Inventor: RAYMOND BAILEY DENIS , HERVEY DANIELS PHILIP