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发明名称
WORKING EQUIPMENT OF TRENCHLESS DRAIN-TUBE LAYER
摘要
申请公布号
SU1559061(A1)
申请公布日期
1990.04.23
申请号
SU19874301473
申请日期
1987.06.19
申请人
VNII GIDROTEKH MELIORAT
发明人
NIKOLODYSHEV IVAN S,SU;SHREJDER VLADIMIR A,SU
分类号
E02F5/10
主分类号
E02F5/10
代理机构
代理人
主权项
地址
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