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经营范围
发明名称
A torque isolation mechanism
摘要
申请公布号
GB0127222(D0)
申请公布日期
2002.01.02
申请号
GB20010027222
申请日期
2001.11.13
申请人
RUFF PUP LIMITED
发明人
分类号
E21B17/046;E21B17/06
主分类号
E21B17/046
代理机构
代理人
主权项
地址
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