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发明名称
岩石扩孔器
摘要
申请公布号
CN300748075D
申请公布日期
2008.02.20
申请号
CN200730074415.4
申请日期
2007.04.05
申请人
上海管易地下管线工程技术有限公司
发明人
齐学武
分类号
15-04
主分类号
15-04
代理机构
上海世贸专利代理有限责任公司
代理人
严新德
主权项
地址
201316上海市南汇区航头镇航南公路181号
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