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经营范围
发明名称
AVGRENINGSINNRETNING.
摘要
申请公布号
NO794023(A)
申请公布日期
1980.06.12
申请号
NO19790004023
申请日期
1979.12.10
申请人
EXXON PRODUCTION RESEARCH CO,
发明人
ROTHBERG, ROBERT H.,
分类号
E21B23/03;E21B23/12;(IPC1-7):E21B/
主分类号
E21B23/03
代理机构
代理人
主权项
地址
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