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发明名称
RAMMBOHRGERAET.
摘要
申请公布号
AT75522(T)
申请公布日期
1992.05.15
申请号
AT19870116081T
申请日期
1987.11.02
申请人
ROEMER, HELMUTH
发明人
ROEMER, HELMUTH
分类号
E21B4/14;E21B7/26;(IPC1-7):E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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