Patents Assigned to Alberta Limited
  • Patent number: 5417603
    Abstract: A playing structure includes a plurality of playing structure modules connectable together to form an array having a generally continuous, visually fluid, three-dimensional playing surface. Each playing structure module has a reversible top to allow the topography of the playing surface to be changed. The top of each playing structure module has a different three-dimensional topography on either side thereof. Each playing structure module may have a different or the same top. The playing surfaces have a coloured landscape painted thereon to depict lakes, countrysides, roadways etc. and the like. The topography of the playing surfaces and the painted landscapes are designed so that the certain symmetries exist.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: May 23, 1995
    Assignee: Alberta Limited
    Inventor: Robert De Chazal