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公开(公告)号：US3284366A
公开(公告)日：1966-11-08
申请号：US43379765
申请日：1965-02-18
Applicant: RITTER PFAUDLER CORP
Inventor： CALVIN CALMON , ALLEN JR WILLIAM
IPC: B01J47/00
CPC classification number: B01J47/019
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