SHIELD DRILLING METHOD AND APPARATUS,申请号JP19840070770-传众专利搜索

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发明名称	SHIELD DRILLING METHOD AND APPARATUS
摘要
申请公布号	JPS60215996(A)	申请公布日期	1985.10.29
申请号	JP19840070770	申请日期	1984.04.11
申请人	ISEKI KAIHATSU KOUKI:KK	发明人	AKESAKA TOSHIO
分类号	E21D9/087;E21D9/08;E21D9/12	主分类号	E21D9/087
代理机构		代理人
主权项
地址

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