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发明名称
BACK PRESSURE INTERCEPTING, OPENING, CLOSING APPARATUS FOR RECYCLING OF ASH
摘要
申请公布号
KR1019900003474(B1)
申请公布日期
1990.05.19
申请号
KR1019870009385
申请日期
1987.08.27
申请人
发明人
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主分类号
代理机构
代理人
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