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发明名称
BRUNNENFILTERROHR
摘要
申请公布号
DE7820663(U1)
申请公布日期
1978.10.19
申请号
DE19780020663U
申请日期
1978.07.10
申请人
SCHAUBSTAHL-WERKE, 5910 KREUZTAL
发明人
分类号
E21B43/08;(IPC1-7):E21B43/08
主分类号
E21B43/08
代理机构
代理人
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地址
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