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发明名称
Gestängekupplung
摘要
申请公布号
AT253437(B)
申请公布日期
1967.04.10
申请号
AT19640004905
申请日期
1964.06.08
申请人
"CANADA" TIEFBOHRGERAETE UND MASCHINENFABRIK ING. S. NADEL & A. NADEL
发明人
分类号
E21B17/06
主分类号
E21B17/06
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代理人
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