Kilns; Furnaces; Heat treating ovens for industrial use; Knife and blade heat treating ovens and kilns; Kilns for heat-treating, softening and melting glass; Kilns for heat-treating and drying ceramics and clays and melting and applying glaze; Kilns and casting ovens for making jewelry and burning wax; Kilns for melting metals for artistic and industrial uses; Drying kilns; Electric furnaces; Melting furnaces; Curing ovens for artistic and industrial use; Kilns for heating, softening, melting and burning plastics; Kilns for drying, curing and burning paints and other coatings; Kilns for sintering of metals, ceramics, plastics and other materials; Exhaust fans for kilns, furnaces and ovens; Parts and accessories for all the above classified in this class
Environmental Control Apparatus