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经营范围
发明名称
SIDE POCKET MANDREL
摘要
申请公布号
GB8500387(D0)
申请公布日期
1985.02.13
申请号
GB19850000387
申请日期
1985.01.08
申请人
AVA INTERNATIONAL CORPORATION
发明人
分类号
E21B23/03
主分类号
E21B23/03
代理机构
代理人
主权项
地址
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