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公开(公告)号:CA502733A
公开(公告)日:1954-05-18
申请号:CA502733D
Applicant: STANDARD OIL DEV CO
Inventor: FERGUSON ROBERT P
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公开(公告)号:CA411154A
公开(公告)日:1943-03-16
申请号:CA411154D
Applicant: STANDARD OIL DEV CO
Inventor: FERGUSON ROBERT P , SCHUMACHER FREDERICK W
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