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公开(公告)号：US2323152A
公开(公告)日：1943-06-29
申请号：US41625141
申请日：1941-10-23
Applicant: METCALF ANDREW J
Inventor： METCALF ANDREW J
CPC classification number: B01D27/00 , B01D29/15 , B01D29/58 , B01D2201/0461
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