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发明名称
ОГОЛОВОК СМОТРОВОГО КОЛОДЦА
摘要
申请公布号
RU29942(U1)
申请公布日期
2003.06.10
申请号
RU20020116575U
申请日期
2002.06.21
申请人
Архангельский государственный технический университет
发明人
Невзоров А.Л.;Никитин А.В.
分类号
E02D29/12
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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