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发明名称
OPENING AND CLOSING DEVICE OF MANHOLE COVER
摘要
申请公布号
KR0131060(Y1)
申请公布日期
1998.12.15
申请号
KR19950023781U
申请日期
1995.09.04
申请人
KOREA WELDING MATERIALS CO.,LTD
发明人
SHIN, BOK-SIK
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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