SECONDARY BACKFILLING METHOD OF SMALL DIAMETRAL SHIELD,申请号JP19900339714-传众专利搜索

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发明名称	SECONDARY BACKFILLING METHOD OF SMALL DIAMETRAL SHIELD
摘要
申请公布号	JPH04209296(A)	申请公布日期	1992.07.30
申请号	JP19900339714	申请日期	1990.11.30
申请人	HONMA RYOJI	发明人	HONMA RYOJI
分类号	E21D11/04	主分类号	E21D11/04
代理机构		代理人
主权项
地址

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