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经营范围
发明名称
FUME COLLECTING CANOPIES
摘要
申请公布号
GB1488777(A)
申请公布日期
1977.10.12
申请号
GB19760021687
申请日期
1976.05.25
申请人
NORTHWESTERN STEEL & WIRE CO
发明人
分类号
B08B15/02;C21C5/40;(IPC1-7):B08B15/02
主分类号
B08B15/02
代理机构
代理人
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地址
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