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发明名称
UN DISPOSITIVO DE CAMBIO DE VELOCIDADES EN BICICLETA
摘要
申请公布号
ES150795(A2)
申请公布日期
1942.06.01
申请号
ES19410150795
申请日期
申请人
GARCIA DIAZ, MODESTO
发明人
分类号
(IPC1-7):B62
主分类号
(IPC1-7):B62
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