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发明名称
Jar enhancer
摘要
申请公布号
GB9424833(D0)
申请公布日期
1995.02.08
申请号
GB19940024833
申请日期
1994.12.08
申请人
HOUSTON ENGINEERS, INC.
发明人
分类号
E21B31/107;E21B31/113
主分类号
E21B31/107
代理机构
代理人
主权项
地址
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