An artificial flagstone for use in combination with other similar flagstones for covering a surface with a natural random look, the flagstone having a generally hexagonal body comprising a first, second, third, fourth, fifth and sixth consecutive vertices; a first pair of generally congruent irregularly-shaped...http://www.google.com/patents/US7988382?utm_source=gb-gplus-sharePatent US7988382 - Artificial flagstone for providing a surface with a natural random look
