12 Aeronautic, astronautic vehicles, namely, space vehicles, aircrafts, aerostats, helicopters, missiles, aerial conveyors, aeroplanes, rockets; transmission for land vehicles and propulsion couplings and units, namely, shafts, gear boxes, engines of all types for land vehicles, namely, gas turbomachines, industrial turbines, thermal engines, electrothermal engines, rocket propulsion engines, combined propulsion engines; friction, shock absorbing, clutching and/or braking devices namely shock absorber, clutches and brakes for land, motor or railroad vehicles