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发明名称
Vorrichtung zum Abdichten eines Bohrloches
摘要
申请公布号
DE202010009812(U1)
申请公布日期
2010.09.09
申请号
DE201020009812U
申请日期
2010.07.04
申请人
KALESSE, ROGER
发明人
分类号
E21B33/02
主分类号
E21B33/02
代理机构
代理人
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