9 scientific, nautical, surveying, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; namely, displays, sensors, security software, digital signal processing, analog signal processing and microwave apparatus, modems, data processing terminals, signal broadcasters for private telephone networks, acoustic condition monitoring and data acquisition analysis equipment; acoustic equipment; namely, beacons, noise attenuating, sound reducing, vibration reducing and acoustic remote control apparatus; automated information kiosks, electronic lockers, cash registers, calculators, fire-extinguishing apparatus; metallic elements of electric switches, metallic pins for electrical contacts, electrodes and magnets; radiocommunication and radiolocating equipment; namely, ultra-stable frequency generators for defense and satellite telecommunications, radionavigation receivers for surface vessels and submarines, on-board mobile or stationary terminals for radiolocation of vehicles or radio communication, radio link data communications systems for production engineering, logistic applications, and remote telecontrol of power networks; electric relays for railway applications; slip rings