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Individual
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Individual
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Priority to ES0273542ApriorityCriticalpatent/ES273542A1/en
Publication of ES273542A1publicationCriticalpatent/ES273542A1/en
Improvements in the construction of metal frames, according to which two different types of parts are respectively destined to constitute the side walls of the frame and the edges of connection between these walls, the first of whose pieces are constituted by plates of rectangular plant with longitudinal edges bent orthogonally and provided with a succession of regularly spaced perforations; while the pieces of the second type are constituted by plates curved at right angles according to one of their axes, and with their edges parallel to this axis also orthogonally bent and provided with a succession of regularly spaced perforations. (Machine-translation by Google Translate, not legally binding)
ES0273542A1961-12-111961-12-11Improvements in the construction of metal frames (Machine-translation by Google Translate, not legally binding)
ExpiredES273542A1
(en)