Patent ID: 7198270

Claim:
A parallelogram plate adapted for assembly with five substantially similar other parallelogram plates into a parallelepipedal formation comprising: a generally planar top surface; a generally planer bottom surface; four generally planar side surfaces tapered toward said plate's bottom surface such that said bottom surface is smaller in area than said top surface, and wherein said top surface and said side surfaces meet at four linear top edges and said bottom surface and said side surfaces meet at four linear bottom side edges, and wherein said four side surfaces are generally identical and each side surface has at least one recess formed in the configuration of a right prism therein and at least one matingly conformed protrusion, wherein said top surface has a “Tee” (T) shaped post traversing the length of said top surface and residing parallel to, but offset from, a longitudinal axis of said top surface, and a ½ “Tee” (½ T) shaped post residing parallel to said “Tee” (T) shaped post and adjacent to a top edge such that a complementary inverted “Tee” (T) shaped slot is formed therebetween said posts and a complementary inverted ½ “Tee” (½ T) shaped opening is formed adjacent to said “Tee”(T) shaped post.