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公开(公告)号：US2453798A
公开(公告)日：1948-11-16
申请号：US53851544
申请日：1944-06-02
Applicant: PHILIPS LAB INC
Inventor： GERARD KLOOS
IPC: G01N23/207 , H05G1/04
CPC classification number: H05G1/04 , G01N23/207
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