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公开(公告)号：US2354195A
公开(公告)日：1944-07-25
申请号：US39813341
申请日：1941-06-14
Applicant: JAMES L BROWN
Inventor： BROWN JAMES E
IPC: B01D35/30
CPC classification number: B01D35/30 , B01D2201/301
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