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经营范围
发明名称
ZINC AND LEAD SMELTING SHAFT FURNACE
摘要
申请公布号
PL120821(B1)
申请公布日期
1982.03.31
申请号
PL19780211121
申请日期
1978.11.20
申请人
发明人
分类号
C22B;F27B1/08;(IPC1-7):F27B1/08
主分类号
C22B
代理机构
代理人
主权项
地址
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