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公开(公告)号：US1871891A
公开(公告)日：1932-08-16
申请号：US44505230
申请日：1930-04-17
Applicant: STANDARD OIL CO INDIANA
Inventor： KINNISON WILLIAM E
IPC: B01D25/12 , B01D29/075
CPC classification number: B01D25/164
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