METHOD OF MAKING FACE FILTER,申请号SU19762320827-传众专利搜索

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发明名称	METHOD OF MAKING FACE FILTER
摘要
申请公布号	SU641078(A1)	申请公布日期	1979.01.05
申请号	SU19762320827	申请日期	1976.02.06
申请人	UK NII PRIRODNYKH GAZOV	发明人	KALNIN OLEG ZHANOVICH,SU;MISHCHENKO ANATOLIJ YUREVICH,SU;TIMASHEV GENNADIJ VLADIMIROVICH,SU
分类号	E21B43/08;(IPC1-7):E21B43/08	主分类号	E21B43/08
代理机构		代理人
主权项
地址

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