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发明名称
APERFEICOAMENTO EM APARELHO COLETOR A VACUO PORTATIL
摘要
申请公布号
BR7902376(A)
申请公布日期
1979.10.23
申请号
BR19790002376
申请日期
1979.04.18
申请人
NFE INT LTD
发明人
DUPRE G
分类号
B01D45/04;B01D50/00;B01D51/00;B04C9/00;(IPC1-7):B01D46/00
主分类号
B01D45/04
代理机构
代理人
主权项
地址
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