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发明名称
PERFECCIONAMIENTOS EN CIERRES IRRELLENABLES CON MECANISMO VALVULAR
摘要
申请公布号
ES224757(A1)
申请公布日期
1956.01.01
申请号
ES19570002247
申请日期
1955.11.02
申请人
CALLE VILLAR, CARLOS
发明人
分类号
(IPC1-7):B67
主分类号
(IPC1-7):B67
代理机构
代理人
主权项
地址
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