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发明名称
摘要
申请公布号
JPS57168808(U)
申请公布日期
1982.10.23
申请号
JP19810055796U
申请日期
1981.04.20
申请人
发明人
分类号
G11B33/02;G01C9/00;G01C9/12;G11B3/60;G11B17/028;G11B33/12;(IPC1-7):G01C9/12;G11B1/00
主分类号
G11B33/02
代理机构
代理人
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地址
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