MUDDY WATER SHIELD DRILLING APPARATUS,申请号JP19820107025-传众专利搜索

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发明名称	MUDDY WATER SHIELD DRILLING APPARATUS
摘要
申请公布号	JPS59493(A)	申请公布日期	1984.01.05
申请号	JP19820107025	申请日期	1982.06.22
申请人	ISHIKAWAJIMA HARIMA JUKOGYO KK	发明人	MUTA MASARU;MUTAGUCHI KATSUO;UEHARA TOSHIAKI
分类号	E21D9/13;E21D9/06;E21D9/12	主分类号	E21D9/13
代理机构		代理人
主权项
地址

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