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发明名称
Dispositivo de retención para mecanismos retráctiles de elementos escritores
摘要
申请公布号
ES58256(Y)
申请公布日期
1957.07.16
申请号
ES19560000582U
申请日期
1957.01.16
申请人
VALLS AYNÓ, ROSARIO
发明人
分类号
主分类号
代理机构
代理人
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