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发明名称
摘要
申请公布号
JPS6242767(Y2)
申请公布日期
1987.11.02
申请号
JP19810003541U
申请日期
1981.01.13
申请人
发明人
分类号
B04C5/16;(IPC1-7):B04C5/16
主分类号
B04C5/16
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