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发明名称
摘要
申请公布号
JPS4635960(Y1)
申请公布日期
1971.12.10
申请号
JP19680037402U
申请日期
1968.05.08
申请人
发明人
分类号
(IPC1-7):B02C17/22;C04B7/36;B29C27/00
主分类号
(IPC1-7):B02C17/22
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