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经营范围
发明名称
Coal ploughs
摘要
申请公布号
GB1130130(A)
申请公布日期
1968.10.09
申请号
GB19670027816
申请日期
1967.06.16
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
分类号
E21C27/32
主分类号
E21C27/32
代理机构
代理人
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