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公开(公告)号：US3113448A
公开(公告)日：1963-12-10
申请号：US9576661
申请日：1961-01-12
Applicant: BECKMAN INSTRUMENTS INC
Inventor： HARDWAY JR EDWARD V , CRUMP ELDON E
CPC classification number: G01N9/02 , G01F17/00 , G01N2009/028
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