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发明名称
METHOD AND DEVICE FOR LOCATING BRANCHES IN DRAINS
摘要
申请公布号
GB8913200(D0)
申请公布日期
1989.07.26
申请号
GB19890013200
申请日期
1989.06.08
申请人
WOODBRIDGE ELECTRONICS LIMITED
发明人
分类号
E21D9/02;F16L55/26;G01V3/08
主分类号
E21D9/02
代理机构
代理人
主权项
地址
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