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发明名称
KOHLENDREHBOHRMASCHINE
摘要
申请公布号
DE2508641(B2)
申请公布日期
1977.06.16
申请号
DE19752508641
申请日期
1975.02.28
申请人
发明人
分类号
E21B3/035;(IPC1-7):E21C1/04
主分类号
E21B3/035
代理机构
代理人
主权项
地址
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