A system for displaying packaged goods has an insert sized to be placed on a bottom surface of a packaging carton. The insert has a plurality of alternating peaks and valleys. Each peak has a front wall, a rear wall having a height greater than the front wall and a sloped top extending from the front...http://www.google.es/patents/US5573117?utm_source=gb-gplus-sharePatente US5573117 - Product shipping and display system
