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发明名称
摘要
申请公布号
JPH025869(Y2)
申请公布日期
1990.02.13
申请号
JP19840047658U
申请日期
1984.03.31
申请人
发明人
分类号
A22C7/00;B02C18/18;(IPC1-7):B02C18/18
主分类号
A22C7/00
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