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公开(公告)号：US1634372A
公开(公告)日：1927-07-05
申请号：US59369022
申请日：1922-10-11
Applicant: GEN CHEMICAL CORP
Inventor： LEWERS GEORGE R
IPC: B03C3/41
CPC classification number: B03C3/41 , B03C2201/10 , Y10S55/38
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