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经营范围
发明名称
Retractable coupler
摘要
申请公布号
GB9611375(D0)
申请公布日期
1996.08.07
申请号
GB19960011375
申请日期
1996.05.31
申请人
FMC CORPORATION
发明人
分类号
E21B33/038;E21B33/043
主分类号
E21B33/038
代理机构
代理人
主权项
地址
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