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公开(公告)号：US2638581A
公开(公告)日：1953-05-12
申请号：US16934250
申请日：1950-06-21
Applicant: BRIGGS FILTRATION COMPANY
Inventor： MARVEL HARVEY E
IPC: B01D35/143
CPC classification number: B01D35/143 , Y10S116/42
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