12 [ 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 ]
Trademark: 71354243
