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公开(公告)号:US3033541A
公开(公告)日:1962-05-08
申请号:US68496057
申请日:1957-09-19
Applicant: STANDARD OIL CO
Inventor: BELKIN HAROLD M
IPC: B01D47/02
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公开(公告)号:US2877173A
公开(公告)日:1959-03-10
申请号:US49624455
申请日:1955-03-23
Applicant: STANDARD OIL CO
Inventor: THORNE JR HENRY C , BELKIN HAROLD M
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