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Individual
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Individual
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Priority to ES0292208ApriorityCriticalpatent/ES292208A2/en
Publication of ES292208A2publicationCriticalpatent/ES292208A2/en
Improvements in the Patent of Invention 291.053 relating to improvements in the sofa beds, characterized by comprising a folding frame that constitutes the backrest of the sofa, being hinged by being joined together with a few plates that at an intermediate point have a bifurcation consisting of another fixed plate to the frame fixed at the end and in an articulated manner, the end of the plate integral with the backrest having a point of attachment of a spring that is fixed at the end opposite a transverse bar disposed in the upper part of the fixed frame. (Machine-translation by Google Translate, not legally binding)
ES0292208A1963-10-041963-10-04Improvements in the sofa bed (Machine-translation by Google Translate, not legally binding)
ExpiredES292208A2
(en)