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发明名称
LOAD-BEARING SPLIT RING WITH DIFFERENT DEPTH SLOTS
摘要
申请公布号
GB2155133(B)
申请公布日期
1987.07.15
申请号
GB19840022644
申请日期
1984.09.07
申请人
* ARMCO INC
发明人
JAMES H * OWENS
分类号
E21B33/038;F16L37/00;(IPC1-7):F16L37/12
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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