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发明名称
FREMGANGSMAADE OG APPARATUR TIL FREMDRIVNING AF ROER I JORDEN
摘要
申请公布号
DK11692(D0)
申请公布日期
1992.01.31
申请号
DK19920000116
申请日期
1992.01.31
申请人
ROEMER, HELMUTH
发明人
ROEMER, HELMUTH
分类号
E21B7/24;E21B7/26
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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