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发明名称
CONJUNTO OBTURADOR GIRATORIO Y CICLON DECANTADOR DE POLVO PARA PERFORACIONES POR AIRE.
摘要
申请公布号
ES175082(Y)
申请公布日期
1972.12.01
申请号
ES19710175082U
申请日期
1971.12.11
申请人
AGUA;SUELO, S. A.
发明人
分类号
B04C;E21B
主分类号
B04C
代理机构
代理人
主权项
地址
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