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公开(公告)号:US3247094A
公开(公告)日:1966-04-19
申请号:US23981462
申请日:1962-11-23
Applicant: NALCO CHEMICAL CO
Inventor: MAHMOUD DAJANI
公开(公告)号:US3247094A
公开(公告)日:1966-04-19
申请号:US23981462
申请日:1962-11-23
Applicant: NALCO CHEMICAL CO
Inventor: MAHMOUD DAJANI