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公开(公告)号:US2861960A
公开(公告)日:1958-11-25
申请号:US54729555
申请日:1955-11-16
Applicant: STANDARD OIL CO
Inventor: DE BOER FRANK EDWARD , EDMUND FIELD
公开(公告)号:US2861960A
公开(公告)日:1958-11-25
申请号:US54729555
申请日:1955-11-16
Applicant: STANDARD OIL CO
Inventor: DE BOER FRANK EDWARD , EDMUND FIELD