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1.发明授权
公开(公告)号：US3209586A
公开(公告)日：1965-10-05
申请号：US8047361
申请日：1961-01-03
Applicant: TAKESHI TOHYAMA
Inventor： TAKESHI TOHYAMA
CPC classification number: G01R17/08 , G01L1/086 , G01L9/0026
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