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发明名称
APPARATUS FOR REMOVING DUST
摘要
申请公布号
PL148850(B2)
申请公布日期
1989.12.30
申请号
PL19870265462
申请日期
1987.04.29
申请人
发明人
分类号
A47L;A47L7/00;A47L9/00;(IPC1-7):A47L7/00
主分类号
A47L
代理机构
代理人
主权项
地址
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