PROCESS FOR THE PREPARATION OF DRILLING MUD ADDITIVES,申请号AR19850302592-传众专利搜索

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发明名称	PROCESS FOR THE PREPARATION OF DRILLING MUD ADDITIVES
摘要
申请公布号	AR240551(A1)	申请公布日期	1990.05.31
申请号	AR19850302592	申请日期	1985.12.16
申请人	PETROLEO BRASILEIRO S.A.	发明人
分类号	C01G49/08;C09K8/03;(IPC1-7):C01G49/08;C09K7/00	主分类号	C01G49/08
代理机构		代理人
主权项
地址

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