#USPTO: 15.01.04 - Valves, automobile engine, Motors, outboard (boat), Air cleaner filters, automotive, Alternators, Boat motors, outboards, Carburetors, vehicle, Diesel engines, Motors (machinery), Internal combustion engines, Generators, Filters, oil (automotive), Filters, air cleaner (automotive), Engines, turbine, Engines, steam, Engines, combustion #USPTO: 29.02.04 - Gray or silver (single color used for the entire goods/services) #USPTO: 29.02.06 - Green (single color used for the entire goods/services) #USPTO: 29.03.06 - Green (single color used on a portion of the goods) #USPTO: 29.04.06 - Green (single color used on packaging, labels or signs) #USPTO: 29.05.04 - Gray or silver (Multiple colors used on the entire goods) #USPTO: 29.06.04 - Gray or silver (Multiple colors used on a portion of the goods)