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公开(公告)号：US3521674A
公开(公告)日：1970-07-28
申请号：US3521674D
申请日：1968-06-24
Applicant: BECKMAN INSTRUMENTS INC
Inventor： DODSON MICHAEL , MEHAFFY GORDON E
IPC: F16K31/126 , G01N1/00 , G01N30/20 , F16K11/06
CPC classification number: G01N35/1097 , F16K31/126 , G01N30/20 , G01N2030/204 , Y10T137/86879
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