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Individual
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Individual
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Priority to ES90513UpriorityCriticalpatent/ES90513Y/en
Publication of ES90513UpublicationCriticalpatent/ES90513U/en
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Publication of ES90513YpublicationCriticalpatent/ES90513Y/en
A metal base with adjustable extension and tension, essentially characterized by the fact that it is constituted by a plurality of thready-shaped elements in the form of strap independently tensionable with respect to each other, arranged forming two series of tie-rods, parallel to each other in each series, lying between the sides of a rectangular frame of adjustable extension so that those of one series are crossed with those of the other and each one can be locked and locked, particularly by means of two fixing and graduation devices. (Machine-translation by Google Translate, not legally binding)
ES90513U1961-12-091961-12-09
Adjustable extension and tension metal frame
ExpiredES90513Y
(en)