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公开(公告)号：US3409134A
公开(公告)日：1968-11-05
申请号：US50060565
申请日：1965-10-22
Applicant: DORR OLIVER INC
Inventor： WALLACE GORDON C , KELLER LEON D
IPC: B01D33/21
CPC classification number: B01D33/21 , B01D33/466 , B01D33/48 , B01D33/804 , B01D2201/282
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