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经营范围
发明名称
DRILL PIPE CONVEYOR OF DRILLING RIG
摘要
申请公布号
JPS61155588(A)
申请公布日期
1986.07.15
申请号
JP19840281728
申请日期
1984.12.27
申请人
MITSUBISHI HEAVY IND LTD
发明人
GOSHI KATSUNORI;MASUDA KAZUO;OKADA TAKASHI
分类号
E21B19/15;E21B19/14
主分类号
E21B19/15
代理机构
代理人
主权项
地址
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