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发明名称
摘要
申请公布号
JPS63173350(U)
申请公布日期
1988.11.10
申请号
JP19870063305U
申请日期
1987.04.24
申请人
发明人
分类号
B04B9/12;B04B9/14;(IPC1-7):B04B9/12
主分类号
B04B9/12
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