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发明名称
Erdbohrgeraet
摘要
申请公布号
DE1484421(A1)
申请公布日期
1969.04.30
申请号
DE19641484421
申请日期
1964.09.15
申请人
FA. HANS BROCHIER
发明人
KOEHLER,HANS-JOACHIM
分类号
E21B7/00
主分类号
E21B7/00
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代理人
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