U.S. federal trademark · Serial No. 71354243 · Reg. No. 0326488
[ BLOCKS ADAPTED TO PROVIDE OR FORM COMBUSTION PORTS, RECUPERATOR BLOCKS, REGENERATOR BLOCKS, ] FURNACE-LINING BLOCKS, KILN-LINING BLOCKS, [ CUPOLA BLOCKS, GAS-GENERATOR BLOCKS, AIR-COOLED FURNACE-LINING BLOCKS, SUSPENDED-FURNACE-ARCH BLOCKS, HEARTH-SUPPORT BLOCKS, COMBUSTION TUBES, ] BURNER BLOCKS, [ BAFFLE BLOCKS, ] GLASS TANK BLOCKS, [ OPEN HEARTH WALL BLOCKS; ] FURNACE-WALL VENEER BLOCKS [ -I.E., FACING BLOCKS KEYED, INTERFITTED, OR OTHERWISE SECURED ON A SUPPORTING WALL TO BE PROTECTED ] ; FURNACE-ARCH VENEER BLOCKS [ -I.E., FACING BLOCKS KEYED, INTERFITTED, OR OTHERWISE CARRIED ON A FURNACE-ARCH STRUCTURE TO BE PROTECTED ]
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