CONJUNTO PROTEGIDO DE TELA DE POCO,申请号BR19780000939-传众专利搜索

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发明名称	CONJUNTO PROTEGIDO DE TELA DE POCO
摘要
申请公布号	BR7800939(A)	申请公布日期	1978.09.19
申请号	BR19780000939	申请日期	1978.02.16
申请人	HOUSTON WELL SCREEN CO	发明人	ROBINSON W
分类号	E03B3/18;B01D29/15;E21B43/08;(IPC1-7):E21D5/01	主分类号	E03B3/18
代理机构		代理人
主权项
地址

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