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发明名称
UN APARATO RECUPERADOR DE POLVO DE ROCA, UTILIZABLE EN PERFORACION MECáNICA DE MINAS
摘要
申请公布号
ES223377(A2)
申请公布日期
1956.03.01
申请号
ES19770002233
申请日期
1955.08.05
申请人
DE LA FUENTE RODRIGUEZ, PIO
发明人
分类号
(IPC1-7):E21
主分类号
(IPC1-7):E21
代理机构
代理人
主权项
地址
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