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发明名称
Coal ploughs
摘要
申请公布号
GB1004554(A)
申请公布日期
1965.09.15
申请号
GB19640018154
申请日期
1964.05.01
申请人
GEWERKSCHAFT EISENHUTTE WESTFALIA
发明人
分类号
E21C27/32;E21C27/34
主分类号
E21C27/32
代理机构
代理人
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地址
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