Air conditioning systems, namely, integrated and roof top air conditioners; air conditioners and structural parts thereof, namely, condensers, evaporators and electric fans, air filters and filter mats; valves, especially thermostat valves, suction stopcocks and slide valves, all these systems, devices, components and valves for air conditioning units for omni-buses and track vehicles; heating installations for vehicles and parts thereof, namely, silencers for heated air, radiators, heaters w...