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发明名称
Tragbares Gesteinsbohrgeraet
摘要
申请公布号
DE1193449(B)
申请公布日期
1965.05.26
申请号
DE1963S088187
申请日期
1963.11.06
申请人
J. K. SMIT & SONS INTERNATIONAL LIMITED
发明人
WINK FRED W.
分类号
E21B3/035
主分类号
E21B3/035
代理机构
代理人
主权项
地址
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