ES554226A0 - Merjoras en el objeto de la patente principal n 548.447 por prefeccionamientos en la construccion de pantografos mecanicos
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Merjoras en el objeto de la patente principal n 548.447 por prefeccionamientos en la construccion de pantografos mecanicos
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ES554226A1986-04-221986-04-22Merjoras en el objeto de la patente principal n 548.447 por prefeccionamientos en la construccion de pantografos mecanicos
ExpiredES8702246A2
(es)
Mejoras en el objeto de la pat.principal n. 536.874 por perfeccionamientos en la construccion de apoyos aligerados para conducciones electrica y-o similares.