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经营范围
发明名称
Improved valve
摘要
申请公布号
GB0612105(D0)
申请公布日期
2006.07.26
申请号
GB20060012105
申请日期
2004.11.19
申请人
RED SPIDER TECHNOLOGY LIMITED
发明人
分类号
E21B34/10
主分类号
E21B34/10
代理机构
代理人
主权项
地址
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