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公开(公告)号：US2499788A
公开(公告)日：1950-03-07
申请号：US52140044
申请日：1944-02-07
Applicant: PHILIPS LAB INC
Inventor： SHORE SIDNEY X
IPC: G01N21/21 , G01N23/207
CPC classification number: G01N21/21 , G01N23/207
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