Machine couplings and transmissions, except for land vehicles; compressed air machines; blowing machines; fluid dispensing machines for industrial use; driving motors, other than for land vehicles; machine wheelworks; propulsion mechanisms, other than for land vehicles; aeronautic engines; compressed air engines; jet engines, other than for land vehicles; motors, other than for land vehicles; industrial robots; fans for motors and engines; hydraulic linear actuators, pheumatic linear actuator...