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发明名称
UN DISPOSITIVO PORTáTIL LUMINOSO PARA SENALAR A LOS TRASEuNTES EL PASO DE UNA PERSONA CIEGA
摘要
申请公布号
ES198964(A1)
申请公布日期
1952.08.01
申请号
ES19640001989
申请日期
1951.07.27
申请人
LESCALLIER, BERNARD
发明人
分类号
(IPC1-7):G08B
主分类号
(IPC1-7):G08B
代理机构
代理人
主权项
地址
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