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发明名称
UN DISPOSITIVO PARA LA EXTRACCION DE GRAVILLA O SIMILARES POR MEDIO DE UN AGENTE DE PRESION FLUYENTE.
摘要
申请公布号
ES344846(A1)
申请公布日期
1968.11.01
申请号
ES19460003448
申请日期
1967.09.08
申请人
LUDWIG SCHENELL K. G. DRUCKLUFTFORDERTECHNIK
发明人
分类号
E02F3/92;(IPC1-7):B07B/
主分类号
E02F3/92
代理机构
代理人
主权项
地址
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