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发明名称
EQUIPMENT FOR PROTECTING WATER WORKS MEASURING EQUIPMENT FROM FREEZING FRACTURE USING THERMOTAP
摘要
申请公布号
KR1019900000573(B1)
申请公布日期
1990.01.31
申请号
KR1019860004861
申请日期
1986.06.17
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
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