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发明名称
ENTIBACION DESPLAZABLE, EN PARTICULAR PARA YACIMIENTO CON PENDIENTE INCLINADA.
摘要
申请公布号
ES408428(A1)
申请公布日期
1975.11.16
申请号
ES19280004084
申请日期
1972.11.09
申请人
ALACCHI
发明人
分类号
E21D23/00;E21D23/08
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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