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经营范围
发明名称
Percussion drill
摘要
申请公布号
GB2227039(A)
申请公布日期
1990.07.18
申请号
GB19890026869
申请日期
1989.11.28
申请人
* TERRA AG FUER TIEFBAUTECHNIK
发明人
DIETMAR * JENNE
分类号
E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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