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公开(公告)号：US2870071A
公开(公告)日：1959-01-20
申请号：US38928453
申请日：1953-10-30
Applicant: IONICS
Inventor： WALTER JUDA , CRETELLA MARY C
CPC classification number: C01G23/022 , C01G23/02 , C25B1/00
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