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发明名称
UTVIDBAR PAKNING FOR ANVENDELSE I ET BOREHULL SOM FOERER TIL EN BROENN
摘要
申请公布号
NO143173(C)
申请公布日期
1980.12.29
申请号
NO19740002022
申请日期
1974.06.05
申请人
CHEVRON RESEARCH COMPANY,
发明人
HUTCHISON, STANLEY OSCAR,;MITCHELL, NEAL LOUIS,
分类号
E21B33/127;F16J15/46;(IPC1-7):E21B33/12
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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