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发明名称
UNA PIEZA DE INSERCION DE MANGANESO MOLDEADO PARA UN CONJUNTO DE CRUZAMIENTO DE VIAS FERROVIARIAS
摘要
申请公布号
AR192466(A1)
申请公布日期
1973.02.21
申请号
AR19720243651
申请日期
1972.08.12
申请人
DAMY S
发明人
分类号
E01B7/12
主分类号
E01B7/12
代理机构
代理人
主权项
地址
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