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Priority to ES0057668UpriorityCriticalpatent/ES57668Y/es
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Escalera de mano caracterizada esencialmente por estar constituida por dos montantes rectos y paralelos de tubo de aluminio que presentan una sección aproximadamente poligonal con, por lo menos, dos caras opuestas paralelas, y por una serie de peldaños constituidos por tubos redondos del propio material cuyos extremos atraviesan los montantes en puntos convenientes y están remachados y fijados sólidamente a los mismos, estando la superficie de los tubos que forman los peldaños, comprendida entre ambos montantes, provista de nervios longitudinales con objeto de evitar el resbalamiento.
ES0057668U1956-12-071956-12-07Escalera de mano
ExpiredES57668Y
(es)