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发明名称
摘要
申请公布号
JPH047394(U)
申请公布日期
1992.01.23
申请号
JP19900047392U
申请日期
1990.05.08
申请人
发明人
分类号
G04C3/14;G04C3/00;(IPC1-7):G04C3/00
主分类号
G04C3/14
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