SOIL AND SAND EXCAVATING AND DISCHARGING DEVICE FOR VERTICAL TYPE EXCAVATOR,申请号JP19870056872-传众专利搜索

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发明名称	SOIL AND SAND EXCAVATING AND DISCHARGING DEVICE FOR VERTICAL TYPE EXCAVATOR
摘要
申请公布号	JPS63223294(A)	申请公布日期	1988.09.16
申请号	JP19870056872	申请日期	1987.03.13
申请人	MITSUBISHI HEAVY IND LTD	发明人	SAITO KYO;HANADA HIROYA
分类号	E21B7/20;E21D1/03	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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