Refrigeration units; absorption refrigeration units; compression refrigeration units; fluid, air, and water heaters and coolers; air filters, humidifiers, ventilators and distributors; refrigerant apparatus being evaporators and absorbers; burners; shell and tube, fin and tube, and plate and fin heat exchangers not being parts of machines and all other heat exchangers in this class; air delivery, handling and induction units in this class; refrigerant condensers and compressors in this class; fans, blowers, boilers, furnaces, heat pumps and incinerators in this class; and parts thereof

Entertainment, including musical groups, performing and recording artists and all associated services