Display board

Claim 1

A DISPLAY BOARD COMPRISING, IN COMBINATION, AN INTEGRALLY FORMED BACKING SUPPORT DEFINING A VOLUME CONSTRUCTED TO RECEIVE A PLURALITY OF INDIVIDUAL PANELS; SAID VOLUME BEING BOUNDED BY LONGITUDINALLY EXTENDING END CHANNELS, A BOTTOM CHANEL, AND A TOP CHANNEL; ALL OF SAID CHANNELS FORWARDLY PROJECTING FROM A PLANAR SURFACE OF SAID BACKING SUPPORT TO RESTRICTIVELY CONFINE SAID PANELS TO WITHIN SAID VOLUME DEFINED THEREBY; MAGNETIC MEANS PANELS ADAPTED TO RECEIVE INDICIA MEANS; MAGNETIC MEANS INDIVIDUALLY AFFIXING EACH OF SAID PANELS TO SAID BACKING STRUCTURE; EACH OF SAID PANELS EXTENDING ACROSS THE WIDTH OF SAID BACKING STRUCTURE; SAID END CHANNELS MAINTAINING SAID PLURALITY OF PANELS IN RESPECTIVE ALIGNMENT ALONG THE LENGTH OF SAID BACKING STRUCTURE; SAID MAGNETIC MEANS CONSTRUCTED TO PERMIT THE REMOVAL OF SELECTED ONES OF SAID PANELS FROM SAID BACKING STRUCTURE, THE OTHER OF SAID PANELS BEING MAINTAINED IN POSITION, ADAJCENT ONES OF SAID INDIVIDUAL PANELS BEING SLIDABLE AS A GROUP ALONG SAID BACKING SUPPORT WHILE BEING RETAINED WITHIN SAID VOLUME; THE UPPERMOST REGION OF SAID DISPLAY BOARD INCLUDING A BAR EXTENDING ACROSS THE WIDTH OF SAID BACKING SUPPORT; SAID TOP CHANNEL BEING OF AN EXTENT CORRESPONDING TO THE EXTENT OF SAID BAR, AND DEFINING A TOP VOLUME PORTION SUFFICIENT TO CONTAIN SAID BAR, MEANS BIASING SAID BAR DOWNWARD AGAINST THE UPPER EDGE OF AN ADJACENT PANEL FOR PROGRESSIVELY MOVING SAID BAR OUT OF SAID TOP VOLUME PORTION; SAID TOP BAR HAVING A FIRST POSITION SUBSTANTIALLY WITHIN SAID TOP VOLUME PORTION CORRESPONDING TO SAID ADJACENT PANEL BEING NEXT TO THE LOWERMOST EXTENDING TO SAID ADTOP CHANNEL, AND A SECOND POSITION SUBSTANTIALLY OUT OF SAID TOP VOLUME PORTION SUBSTANTIALLY OUT OF PANEL BEING DISPLACED FROM THE LOWERMOST EXTENSION OF SAID TOP CHANNEL.