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公开(公告)号：US3104541A
公开(公告)日：1963-09-24
申请号：US2861060
申请日：1960-05-12
Applicant: BECKMAN INSTRUMENTS INC
Inventor： NOEBELS HENRY J , SPRACKLEN STANFORD B
IPC: G01N30/46
CPC classification number: G01N30/461
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