S SECHERON

[ machine parts, namely starter and brake resistors with forced ventilation or natural cooling, changeover switches and selectors; electrically operated earthing brushes being parts of machines; wheel flange lubrication machines; electromagnetic brakes being parts of machines; direct current traction network supply sub-stations comprised of AC to DC and DC to AC converters, sold as a unit ]

electromechanical and electronic tachometers and tachographs for vehicles; electronic speed and distance recorders for vehicles; electronic speedometers, odometers and distance displays for vehicles; electrical and optical pulse generators; computers; rectifiers equipped with semiconductor devices; inverters, converters, and power electronic circuits for transforming electrical energy from AC to DC or vice versa; surge protectors, grounding switches, and circuit breakers; pantographs and current pick-ups for vehicles

locomotives and railway, tramway and trolley cars and automatic and manual couplings and structural parts therefor

[ periodicals, namely newsletters and business reports featuring electrical and mechanical engineering; publications, namely instruction manuals, leaflets, and operating instructions featuring electrical and mechanical engineering ]

construction and repair of DC traction network supply sub-stations

[ education services, namely conducting courses and seminars in the fields of electrical and mechanical engineering ]

[ design of DC traction network supply sub-stations for others ]