Class 006: Metal well screens for sand control in oil and gas wells [ ; metal architectural screens for metalwork; metal architectural screens for pre-fabricated metal column covers; metal architectural screens for metal vent cover for HVAC ducts; metal architectural screens for metal roof vents for heating, cooling, and ventilation in residential and commercial buildings; metal architectural screens for rails; metal architectural awning screens; metal architectural furnace screens; metal architectural window screens; metal architectural sun control screens; metal architectural screen curtain walls made primarily of metal; and metal architectural screen wall panels of metal; insect screens of metal ]; Class 007: [ screens being parts of oil well drilling and production machines; gas well screens being parts of gas well drilling and production machines; industrial screens used in filtration machines for liquid-solid and solid-solid separation ]; Class 011: Water well screens and water intake screens for sanitary purposes; water treatment screens, pipe screens, filtration and separation screens; wedge wire screens for use with water filtration, retaining media and dewatering machines for use in water treatment and water wells; screens used for the sanitary treatment of water and waste materials; industrial screens used in for sanitary purposes for liquid-solid and solid-solid separation [ ; screens specially adapted to lighting fixtures and light assemblies that prevent insects from entering the lighting fixtures and light assembles for use in architectural lighting applications ]
