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公开(公告)号：US2078524A
公开(公告)日：1937-04-27
申请号：US75527234
申请日：1934-11-30
Applicant: CUNO ENG CORP
Inventor： ASHTON PHILIP E , PERKINS CLARENCE B , LIND CARLTON A
CPC classification number: B01D29/46 , B01D25/34 , B01D35/14 , Y10T29/49604
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