ADDITIVE FOR SHIELD DRILLING IN SOIL PRESSURE SYSTEM AND SHIELD TUNNELING METHOD IN SOIL PRESSURE SYSTEM,申请号JP19900116407-传众专利搜索

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发明名称	ADDITIVE FOR SHIELD DRILLING IN SOIL PRESSURE SYSTEM AND SHIELD TUNNELING METHOD IN SOIL PRESSURE SYSTEM
摘要
申请公布号	JPH0413794(A)	申请公布日期	1992.01.17
申请号	JP19900116407	申请日期	1990.05.02
申请人	NIPPON TELEGR & TELEPH CORP <NTT>	发明人	ISHIMOTO HIROHARU;AZUMA MAKOTO
分类号	E21D9/06;C09K8/02	主分类号	E21D9/06
代理机构		代理人
主权项
地址

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