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公开(公告)号：US3005380A
公开(公告)日：1961-10-24
申请号：US75964958
申请日：1958-09-08
Applicant: MIDWESTERN INSTR INC
Inventor： HARRISON WAYNE E , ELMER LINNA
IPC: G01R13/30
CPC classification number: G01R13/30
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