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发明名称
APPARAT FOR SAMMENKOBLING AV TO ROERSTRENGER SOM HENGER I ET BROENNROER
摘要
申请公布号
NO152306(B)
申请公布日期
1985.05.28
申请号
NO19770003104
申请日期
1977.09.08
申请人
EXXON PROD RESEARCH COMP,
发明人
SCHWAGER, THOMAS EDWARD,;BURKHARDT, JOSEPH AVERY,
分类号
E21B33/035;E21B33/038;E21B33/047;E21B33/122;E21B43/013;E21B43/14;(IPC1-7):E21B33/122;E21B43/01
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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