Knockdown showcases

Claim 1

A KNOCKDOWN DISPLAY CASE COMPRISING A PLURALITY OF RIGID PREASSEMBLED PLANAR END FRAMES, RESPECTIVELY HAVING FLAT FACES ADAPTED FOR UPRIGHT INWARDLY PRESENTED OPPOSED DISPOSITION WHEN THE FRAMES ARE IN ASSEMBLED POSITION, AND BEING PROVIDED IN SUCH FACES WITH FRONT AND REAR SETS OF APERTURES, FRONT AND REAR FACIA BOARDS EACH HAVING OPPOSITELY PRESENTED LATERAL FACES, HOOK-LIKE ELEMENTS MOUNTED IN AND PROJECTING BEYOND END FACES OF EACH OF SAID FACIA BOARDS AND BEING ADAPTED FOR LOCKING ENGAGEMENT IN SAID APERTURES WHEREBY TO RIGID INTERCONNECT THE END FRAMES, EACH OF SAID END FRAMES, IN TURN, BEING RELEASABLY ENGAGED WITH CROSS-BARS WHICH ARE LOCATED IN PARALLEL RELATION TO EACH OF THE FRONT AND REAR FACIA BOARDS SO THAT THE END FRAMES ARE THUS INTERCONNECTED IN THE FORM OF AN UPRIGHT BOX-LIKE ENCLOSURE, ONE OF SAID CROSS-BARS HAVING INWARDLY EXTENDING SOCKET PORTIONS AT ITS ENDS, A PAIR OF LATERALLY PROJECTING CONNECTOR ELEMENTS EXTENDING FROM THE END FRAMES AND BEING ADAPTED TO SNUGLY FIT WITHIN THE SOCKET PORTION OF SAID LAST-NAMED CROSS-BAR WHEN ATTACHED TO SAID END FRAMES, END PANELS REMOVABLY DISPOSED IN SAID END FRAMES, END FRAME FACIA BOARDS RIGIDLY DISPOSED WITHIN SAID END FRAMES, AND HAVING THEIR UPPER MARGINS CO-PLANAR WITH THE UPPER MARGINS OF THE FRONT AND REAR FACIA BOARDS, LYING IN THE SAME HORIZONTAL PLANE AS THE FRONT AND REAR FACIA BOARDS, MATCHING CHANNEL-FORMING MEANS RIGIDLY SECURED TO THE UNDERSURFACE OF SAID CROSS-BARS AND THE UPPER SURFACES OF SAID FRONT AND REAR FACIA BOARDS, AND TRANSPARENT PANELS REMOVABLY DISPOSED IN SAID CHANNEL-FORMING MEANS.