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经营范围
发明名称
GUIDE BELL OF DEEP WATER DRILLING VESSEL
摘要
申请公布号
SU1696662(A1)
申请公布日期
1991.12.07
申请号
SU19894776163
申请日期
1989.12.05
申请人
INST OKEANOLOGII IM.P.P.SHIRSHOVA
发明人
VELIKOSELSKIJ MARK A,SU;GAMSAKHURDIYA GEORGIJ R,SU;BARSKIJ IYA L,SU;GELFGAT MIKHAIL YA,SU
分类号
E21B7/128;E21B7/12
主分类号
E21B7/128
代理机构
代理人
主权项
地址
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