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Individual
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Individual
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Priority to ES0001693UpriorityCriticalpatent/ES1693Y/es
Publication of ES1693UpublicationCriticalpatent/ES1693U/es
Application grantedgrantedCritical
Publication of ES1693YpublicationCriticalpatent/ES1693Y/es
Una escalera de acero, caracterizada por componerse los largueros de tubos de acero en forma de hexágono aplastado, y unirse los travesaños por medio de herramienta de compresión o laminación con las dos caras exteriores de los largueros, con el fin de conseguir una escalera de poco peso en que todas sus partes quedan firmemente unidas.
ES0001693U1933-01-301933-01-30Escalera de acero.
ExpiredES1693Y
(es)