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发明名称
DETACHABLE DEVICE FOR EXCAVATION TUBE OF EXCAVATOR
摘要
申请公布号
JPS61282590(A)
申请公布日期
1986.12.12
申请号
JP19850120515
申请日期
1985.06.05
申请人
MITSUBISHI HEAVY IND LTD
发明人
IKETO YUICHI
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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