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公开(公告)号：US3518871A
公开(公告)日：1970-07-07
申请号：US3518871D
申请日：1969-03-05
Applicant: AGENCY IND SCIENCE TECHN
Inventor： KANEDA RYOSAKU , YAMAMOTO SHOJIRO , KOIZUMI KESAKATSU
IPC: G01L27/00
CPC classification number: G01L27/007
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