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发明名称
Drill
摘要
申请公布号
AT393537(B)
申请公布日期
1991.11.11
申请号
AT19890002472
申请日期
1989.10.25
申请人
E + PK INGENIEURBUERO FUER ENTWICKLUNG UND PLANUNG
发明人
ECKER ROBERT DIPL.ING.;LINTERMANN JOHANNES DIPL.ING.
分类号
E21B17/07;E21B19/086;E21B21/10
主分类号
E21B17/07
代理机构
代理人
主权项
地址
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