6
mobile boarding stairs, of metal, for passengers
7
power operated movable passenger bridges for connecting an airport gate to an aircraft; ground support equipment, namely, cargo loading machines; military equipment, namely, cargo loading machines; ground support equipment, namely, power operated apparatus, namely, deicers, which use forced air to remove ice and snow from aircraft
9
Computer hardware used in on-the-ground airport and aircraft management, computer software for use in controlling operations of passenger boarding bridges, for fault tracking, and for airplane and ground support vehicle identification for use in airport and aircraft management; electrical controllers for use in passenger boarding bridges; ground power units, namely, power converters for aircraft
11
airport gate equipment, namely, air conditioning units and electric heaters for use in cooling and heating aircraft boarding bridges and aircraft parked in airports; military equipment, namely, air conditioning units for use in cooling military aircraft
37
maintenance of airport and air cargo buildings, airport ground support equipment, airport ground support vehicles, and airport computer hardware systems