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发明名称
Trennwandung für den Zwischenraum zwischen ineinandergeschobenen Hohlkörpern, insbesondere für Brunnenrohre
摘要
申请公布号
DE4338518(A1)
申请公布日期
1995.05.18
申请号
DE19934338518
申请日期
1993.11.11
申请人
IEG INDUSTRIE-ENGINEERING GMBH, 72770 REUTLINGEN, DE
发明人
BERNHARDT, BRUNO, 72764 REUTLINGEN, DE
分类号
E21B33/10;E21B33/124;E21B33/126;(IPC1-7):E03B3/12
主分类号
E21B33/10
代理机构
代理人
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地址
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