LOCK OF YIELDING SUPPORT IN HEADING,申请号SU19894790899-传众专利搜索

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发明名称	LOCK OF YIELDING SUPPORT IN HEADING
摘要
申请公布号	RU1784064(C)	申请公布日期	1992.12.23
申请号	SU19894790899	申请日期	1989.12.27
申请人	SIDORENKO NIKOLAJ V,SU	发明人	SIDORENKO NIKOLAJ V,SU
分类号	E21D11/22	主分类号	E21D11/22
代理机构		代理人
主权项
地址

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