BUILT-UP TRACK TYPE EXPANSION EARTH DRILLING DEVICE,申请号JP19880074697-传众专利搜索

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发明名称	BUILT-UP TRACK TYPE EXPANSION EARTH DRILLING DEVICE
摘要
申请公布号	JPH01247690(A)	申请公布日期	1989.10.03
申请号	JP19880074697	申请日期	1988.03.30
申请人	KASUGA SAKUSEN KK	发明人	KASUGA TAKASHI
分类号	E21B11/00;E01B23/00;E21B43/00	主分类号	E21B11/00
代理机构		代理人
主权项
地址

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