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发明名称
Zahnwellen-Backreamer
摘要
申请公布号
DE29701846(U1)
申请公布日期
1997.05.28
申请号
DE19972001846U
申请日期
1997.02.04
申请人
OLTMANNS, HANS, 26441 JEVER, DE
发明人
分类号
E21B10/28;(IPC1-7):E21B10/26
主分类号
E21B10/28
代理机构
代理人
主权项
地址
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