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公开(公告)号：US2562783A
公开(公告)日：1951-07-31
申请号：US78732047
申请日：1947-11-21
Applicant: STANDARD OIL DEV CO
Inventor： GEORGE GALLO S , HARTVIGSEN HARMAN V
IPC: B01D11/04
CPC classification number: B01D11/043 , B01D11/0434
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