The container comprises a relatively stiff, form-retaining supporting frame and a flexible shell member. The supporting frame comprises a polygonal bottom member and a corresponding cover member. Each angular point of the bottom member is connected with an angular point of the cover member by means of...http://www.google.es/patents/US5289937?utm_source=gb-gplus-sharePatente US5289937 - Container comprising a relatively stiff, form-retaining supporting frame and a flexible shell member arranged therein
Container comprising a relatively stiff, form-retaining supporting frame and ...
