LOST CIRCULATION PREVENTIVE AGENT,申请号JP19850185166-传众专利搜索

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发明名称	LOST CIRCULATION PREVENTIVE AGENT
摘要
申请公布号	JPS62164993(A)	申请公布日期	1987.07.21
申请号	JP19850185166	申请日期	1985.08.23
申请人	TONE KOJI KK	发明人	UCHIDA YUTAKA;KAWACHI HIDEYUKI
分类号	E21B33/13	主分类号	E21B33/13
代理机构		代理人
主权项
地址

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