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经营范围
发明名称
PROCEDIMENTO PER LA PREPARAZIONE DI ADDITIVO PER FANGHI DI TRIVELLAZIONE E FANGHI DI TRIVELLAZIONE CON ESSO PRODOTTI
摘要
申请公布号
IT1214667(B)
申请公布日期
1990.01.18
申请号
IT19850048686
申请日期
1985.10.17
申请人
PETROLEO BRASILEIRO S.A.- PETROBRAS
发明人
JOAO TAVARES NEIVA DE FIGUEIREDO;HOSAM AHMED ABADALLAH ABDEL-REHIM;IELTON FREDERICO DA PONTE;CARLOS CESAR PEITER;FRANZ XAVER HORN FILHO
分类号
C01G49/08;C09K8/03;(IPC1-7):E21B/
主分类号
C01G49/08
代理机构
代理人
主权项
地址
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