Air-conditioning installations; Dryers used for the removal of solid, liquid and vapor contaminants from compressed air and gases; Equipment for treating groundwater and soil comprising distribution lines, distribution manifolds, drop tubes, well seals and blowers; Fans for air conditioning apparatus; Filters for drinking water; Gas burners; Heaters for vehicles; Light bulbs for directional signals for vehicles; Sewage treatment plants; Solar furnaces; Steam generators; Storm water filtering units featuring non-metal filtering booms and tendrils used to reduce bacteria and hydrocarbons in standing water; Swimming pool chlorinating apparatus; Toilets, portable; Water filtering apparatus