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发明名称
MANHOLE COVER
摘要
申请公布号
KR810000809(Y1)
申请公布日期
1981.07.02
申请号
KR19800003825U
申请日期
1980.06.16
申请人
DAE CHANG IND CO LTD
发明人
HAN YONG
分类号
E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
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地址
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