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发明名称
MANHOLE COVER
摘要
申请公布号
SU1514874(A1)
申请公布日期
1989.10.15
申请号
SU19884369649
申请日期
1988.01.26
申请人
ALESHIN VLADISLAV P,SU
发明人
ALESHIN VLADISLAV P,SU
分类号
E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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