APARATO DE VALVULA.,申请号AR19830292289-传众专利搜索

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法人/股东/高管

发明名称	APARATO DE VALVULA.
摘要
申请公布号	AR240361(A1)	申请公布日期	1990.03.30
申请号	AR19830292289	申请日期	1983.03.04
申请人	HALLIBURTON COMPANY	发明人
分类号	E21B34/00;E21B34/10;E21B49/00;E21B49/08;(IPC1-7):F16K7/10	主分类号	E21B34/00
代理机构		代理人
主权项
地址

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