SECONDARY COVERING STRUCTURE OF TUNNEL,申请号JP19810080819-传众专利搜索

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发明名称	SECONDARY COVERING STRUCTURE OF TUNNEL
摘要
申请公布号	JPS57197398(A)	申请公布日期	1982.12.03
申请号	JP19810080819	申请日期	1981.05.29
申请人	KUMAGAIGUMI:KK	发明人	YOKOTA TAKAYOSHI
分类号	E21D11/04;E21D11/10;E21D20/00;E21D21/00	主分类号	E21D11/04
代理机构		代理人
主权项
地址

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