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发明名称
摘要
申请公布号
JPS43779(Y1)
申请公布日期
1968.01.17
申请号
JP19650057065U
申请日期
1965.07.10
申请人
发明人
分类号
B02C17/14;B02C19/16;(IPC1-7):B02C17/14
主分类号
B02C17/14
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代理人
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