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公开(公告)号：US3447873A
公开(公告)日：1969-06-03
申请号：US3447873D
申请日：1966-03-10
Applicant: BECKMAN INSTRUMENTS INC
Inventor： ASHLEY JOSEPH , KEAHL GERALD THOMAS
CPC classification number: G01J3/26 , G01J3/06 , G01J3/18 , G01J2003/1204 , G01J2003/1226 , G01J2003/1828
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