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发明名称
摘要
申请公布号
JPH0140931(B2)
申请公布日期
1989.09.01
申请号
JP19820039574
申请日期
1982.03.15
申请人
HITACHI LTD
发明人
SEKIZAWA SADAO;SEKI TOSHIO;TAKAHASHI TADASHI
分类号
G01D5/14;G01D5/16;G01D5/245;G11B5/39
主分类号
G01D5/14
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