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经营范围
发明名称
摘要
申请公布号
JPS5644845(U)
申请公布日期
1981.04.22
申请号
JP19790125730U
申请日期
1979.09.13
申请人
发明人
分类号
B02C17/02;B02C17/22;(IPC1-7):B02C17/02
主分类号
B02C17/02
代理机构
代理人
主权项
地址
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