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发明名称
Coal winning apparatus with independently traveling winning machines
摘要
申请公布号
US3356417(A)
申请公布日期
1967.12.05
申请号
US19650488212
申请日期
1965.09.17
申请人
GEWERKSCHAFT EISENHUTTE WESTFALIA
发明人
HEYER WILHELM;RAFAEL WERNER
分类号
E21C27/34;E21C35/12
主分类号
E21C27/34
代理机构
代理人
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