Racks and shelves for displaying such objects as video cassette boxes have been arranged so that the boxes have been presented face-on, or spine-on. The invention displays the boxes diagonally so both the spine and a portion of the front face are presented. The disclosed rack is of vacuum formed plastic...http://www.google.com/patents/US4573588?utm_source=gb-gplus-sharePatent US4573588 - Video shelving
