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发明名称
CONSTRUCTION OF CABLE CHANNELS FOR AREAS WITH GROUND SETTLEMENT
摘要
申请公布号
PL152447(B2)
申请公布日期
1990.12.31
申请号
PL19870268764
申请日期
1987.11.11
申请人
发明人
分类号
E02D;H02G;H02G9/06;H02G9/10;(IPC1-7):H02G9/06
主分类号
E02D
代理机构
代理人
主权项
地址
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