Apparatus for heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, namely, heat pumps, electric heaters for commercial use, portable electric heaters; sinks; sinks containing glass particles; washhand basins as parts of sanitary installations; washhand basins as parts of sanitary installations containing glass particles; bathtubs; bathtubs containing glass particles; bidets; bidets containing glass particles; toilets [water-closets]; toil...