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经营范围
发明名称
IMPROVED INFLATABLE PACKER
摘要
申请公布号
GB9305300(D0)
申请公布日期
1993.05.19
申请号
GB19930005300
申请日期
1992.08.19
申请人
GATES RUBBER CO
发明人
分类号
E21B33/127
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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