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经营范围
发明名称
Coal plough
摘要
申请公布号
GB939145(A)
申请公布日期
1963.10.09
申请号
GB19610037489
申请日期
1961.10.19
申请人
ADELE OELLRICH
发明人
分类号
E21C27/34;E21C27/46
主分类号
E21C27/34
代理机构
代理人
主权项
地址
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