[Class : 7] Rocket Engines, Other Than For Land Vehicles; Propulsion Mechanisms, Other Than For Land Vehicles; Machines And Machine Tools; Valves [Parts Of Machines]; Valves As Machine Components; Pressure Valves [Parts Of Machines]; Cryogenic Valves Being Parts Of Machines; Pressure Valves Being Parts Of Machines; Pressure Reducing Valves [Parts Of Machines]; Pressure Reducing Valves Being Parts Of Cryogenic Apparatus [Machines]; Exhaust Gas Recirculation [Egr] Valves For Motors And Engines; Control Valves For Regulating The Flow Of Gases And Liquids [Parts Of Machines]; Heat Exchangers Being Parts Of Machines; Motors And Engines, Except For Land Vehicles; Machine Coupling And Transmission Components, Except For Land Vehicles, And Parts Therefor; Bearings For Machines; Bearings [Parts Of Machines]; Anti Friction Bearings For Machines; Bearings For Transmission Shafts, Being Parts Of Machines; Aircraft Engines; Power Transmission Couplings For Aircraft; Linear Actuators; Hydraulic Actuators; Control Mechanisms For Machines, Engines Or Motors; Engines For Aerostats; Mechanical Control Apparatus For Machines