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发明名称
Anillos para la formación de filtros para pozos y sondeos
摘要
申请公布号
ES60414(U)
申请公布日期
1957.07.01
申请号
ES19140000604U
申请日期
1957.06.07
申请人
LA MAÑANA, S. A.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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