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经营范围
发明名称
RISER JOINT AND METHOD OF MOUNTING PIT LORRY
摘要
申请公布号
JPS63219793(A)
申请公布日期
1988.09.13
申请号
JP19870304402
申请日期
1987.12.01
申请人
CONOCO INC
发明人
RODERITSUKU JIEI MAIAAZU
分类号
E21B43/01;E21B19/00;E21B19/09
主分类号
E21B43/01
代理机构
代理人
主权项
地址
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