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公开(公告)号：US2882719A
公开(公告)日：1959-04-21
申请号：US48014855
申请日：1955-01-06
Applicant: BECKMAN INSTRUMENTS INC
Inventor： GREENE MALBONE W , LOUIS THAYER
IPC: G01N27/18
CPC classification number: G01N27/185
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