A tubular-frame structure for supporting surfaces comprising a supporting surface (12, 12), a flat frame (13) and legs (14), in which said frame (13) is composed of tubular profiles (15) which can be combined in various ways, characterised in that all the elements are joined through connection means...http://www.google.de/patents/US20020112654?utm_source=gb-gplus-sharePatent US20020112654 - Tubular-frame structure for supporting surfaces
