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发明名称
AKTIVIERUNGSKUGEL ZUR BENUTZUNG MIT EINEM BY-PASS IN EINEM BOHRSTRANG
摘要
申请公布号
DE60123630(D1)
申请公布日期
2006.11.16
申请号
DE20016023630
申请日期
2001.08.02
申请人
LEE, PAUL BERNARD
发明人
LEE, PAUL BERNARD
分类号
E21B21/10;E21B34/14
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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