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发明名称
PERFECCIONAMIENTOS EN LA FABRICACIoN DE LAS BROCAS DE MARTILLOS PERFORADORES
摘要
申请公布号
ES200721(A1)
申请公布日期
1954.01.16
申请号
ES19210002007
申请日期
1951.11.30
申请人
ATLAS POLAR, S.A.
发明人
分类号
(IPC1-7):B25
主分类号
(IPC1-7):B25
代理机构
代理人
主权项
地址
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