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1.发明授权
公开(公告)号：US2785955A
公开(公告)日：1957-03-19
申请号：US28452452
申请日：1952-04-26
Applicant: IONICS
Inventor： WILLIAM POTTER , EDGARDO PARSI
IPC: D21C11/00
CPC classification number: D21C11/005
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