21 [ CONDUCTIVELY COATED GLASS FOR USE IN ELECTRIC HEATING ]
33 [ GLASS TABLEWARE, KITCHENWARE, TUMBLERS, PITCHERS, JARS, ] BOTTLES, BOWLS, GLOBES, VESSELS, TUBING, CANE, PANELS, AND GLASS SHAPES IN FLAT, SOLID, HOLLOW, CYLINDRICAL, OR TUBULAR, FORM FOR USE IN THE INDUSTRIAL ARTS