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经营范围
发明名称
Improved method for coal dressing
摘要
申请公布号
GB536713(A)
申请公布日期
1941.05.23
申请号
GB19400006638
申请日期
1940.04.12
申请人
PETER BIESEL
发明人
分类号
B03B1/00;C10L9/02
主分类号
B03B1/00
代理机构
代理人
主权项
地址
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