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发明名称
PROCEDIMENTO PER OTTENERE UN CONCENTRATO DI MAGNETITE DI ELEVATA AREA SUPERFICIALE
摘要
申请公布号
IT8448923(D0)
申请公布日期
1984.09.28
申请号
IT19840048923
申请日期
1984.09.28
申请人
PETROLEO BRASILEIRO S.A. - PETRO- BRAS
发明人
DE FIGUEIREDO JOAO TAVARES NEIVA;PEITER CARLOS CESAR;REHIM HOSAM AHMED ABDALLAH ABDEL;DA PONTE IELTON FREDERICO
分类号
B01J20/06;B03C1/015;C01G49/08;(IPC1-7):C01F/
主分类号
B01J20/06
代理机构
代理人
主权项
地址
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