A rotary bar for a game table, which is mounted on the table body of the game table. The air from the receivers, under the action of centrifugal forces generated by the rotating blade, is sucked towards the blade end. The second electrode plate includes a second substrate and a second conductive layer located on an upper surface of the second substrate. A heat treatment is performed on the substrate on which the cavity is formed. An output vertical stack processor creates outbound versioned records including the current version and all previous versions for each record of the data file.