9 Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signalling, detecting, testing, inspecting, life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; recorded and downloadable media, computer software, blank digital or analogue recording and storage media; cash registers, calculating devices; computers and computer peripheral devices; electronic publications, downloadable; encoded magnetic cards; computer software applications, downloadable; computer software platforms; apparatus for data collection; data collection computer installations; apparatus for analysis, other than for medical use; computer programs for scientific data analysis; computer programs for data processing; computer programs for the petrochemical industries; industrial computer software programs; computer programs for monitoring computer systems performance; computer monitoring apparatus; computer programs for electronic design automation; computer programs for dynamic simulation of oil well drilling; computer hardware for use with drilling apparatus; semiconductor device in the nature of silicone control rectifier (SCR) electrical units for converting alternating current (AC) to direct current (DC), semiconductor device in the nature of silicone control rectifier (SCR) electrical units for electric generators, silicone control rectifier (SCR) electrical units for electric motors, silicone control rectifier (SCR) electrical units for permanent magnet motors, power distribution equipment, including switches, circuit breakers, transformers, control panels, computers and instrumentation for controlling the distribution of electrical power; power distribution or control apparatus for feeding back regeneratively generated electric energy into a power supply system