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发明名称
VORRICHTUNG ZUM VERGRABEN EINER ROHRLEITUNG IN DEN BODEN VON GEWAESSERN
摘要
申请公布号
DE2261836(B2)
申请公布日期
1976.09.09
申请号
DE19722261836
申请日期
1972.12.18
申请人
发明人
分类号
E02F5/10;E02F9/06;F16L3/00;(IPC1-7):F16L1/04
主分类号
E02F5/10
代理机构
代理人
主权项
地址
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