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发明名称
배수로용 합성수지제 반원관
摘要
<p>내용 없음.</p>
申请公布号
KR830001517(Y1)
申请公布日期
1983.08.24
申请号
KR19810007734U
申请日期
1981.11.17
申请人
发明人
分类号
E03F3/04
主分类号
E03F3/04
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