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发明名称
LOCKING DEVICE OF MANHOLE COVER
摘要
申请公布号
KR930000631(B1)
申请公布日期
1993.01.28
申请号
KR19880002259
申请日期
1988.03.04
申请人
NAKASHIMA IMONO K.K.
发明人
NAKASHIMA, HIRODAKA
分类号
E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
主权项
地址
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