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发明名称
METHOD FOR PREPARING URETHANE RESIN FOR MAGNETIC TAPE
摘要
申请公布号
KR1019930002706(B1)
申请公布日期
1993.04.09
申请号
KR1019890018489
申请日期
1989.12.13
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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