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发明名称
摘要
申请公布号
DD126022(A5)
申请公布日期
1977.06.15
申请号
DD19760194499
申请日期
1976.08.27
申请人
发明人
分类号
B04C1/00;B01D45/12;B04C5/00;B04C7/00;B07B7/086;B66F9/06;(IPC1-7):B04B7/00
主分类号
B04C1/00
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