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发明名称
SEA BOTTOM ORE HOISTING DEVICE
摘要
申请公布号
JPH0493491(A)
申请公布日期
1992.03.26
申请号
JP19900210336
申请日期
1990.08.10
申请人
NKK CORP
发明人
ZAITSU MASARU;AOSHIKA KATSUYUKI;NAKANISHI KAZUO
分类号
E21C50/00
主分类号
E21C50/00
代理机构
代理人
主权项
地址
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