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发明名称
摘要
申请公布号
JPS57112329(U)
申请公布日期
1982.07.12
申请号
JP19800188301U
申请日期
1980.12.29
申请人
发明人
分类号
G03B17/20;G03B13/02;G03B19/12;G11B15/44;(IPC1-7):G03B13/02
主分类号
G03B17/20
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