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Publication of ES1016603YpublicationCriticalpatent/ES1016603Y/en
Sub-frame improved essentially characterized in that the strips sides vertical and upper horizontal, presented by the previous plan, a rebate or recess square, forming in the unión miter between the two strips, a mortise, where he's staying, fixed by screws, gussets triangular booster, understanding on the outer peripheral canto, a central recess within which is applied at the corner of unión, one plate folded square and attached to liston superior and lateral liston contiguous, previously joined together by screws. (Machine-translation by Google Translate, not legally binding)