9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking and supervising, life-saving and teaching apparatus and instruments, namely, wireless, handheld audio and video recorders and transmitters; apparatus and instruments for conducting, distributing, converting, storing, regulating or controlling electricity, namely, wireless, handheld audio and video recorders and transmitters; apparatus for recording, transmitting and reproducing sound or images, namely, wireless, handheld audio and video recorders and transmitters; blank magnetic data carriers and recording discs; videoconferencing systems comprised of telephones, flat panel display screens, videophones and codecs in the nature of digital signal processors; systems, apparatus and equipment, namely, software and downloadable web-based software applications for real-time, multimedia communications over computer networks; apparatus for the reception, storage, reproduction, playback, recording and transmission of sounds and images, namely, cameras, microphones, television monitors, video monitors, computer monitors, desktop video phones, audio speakers, amplifiers, echo cancellers in the nature of filters for radio interference suppression, sound mixers, loudspeakers, remote control telephone and video transmitters, television sets, radio sets, audio and video disc players, memory-based players in the nature of mp3 players, telephones, video telephones, mobile telephones and portable telephone terminals; systems and equipment for digital broadcasting of audio, data and video across cable, satellite, terrestrial, IP and telecom networks, namely, wireless, handheld audio and video recorders and transmitters; systems and equipment for streaming of audio, data and video across cable, satellite, terrestrial, IP and telecom networks, namely, wireless, handheld audio and video recorders and transmitters; systems and equipment for communication infrastructure, namely, archives in the nature of Internet servers, sound mixers, gatekeepers in the nature of computer hardware for telecommunications, firewalls in the nature of computer hardware and telecommunications network management software; computer software for surveillance, security, encryption and authentication of data; computer software for management of time, appointments, schedules, assets and meeting room management; downloadable electronic publications, namely, books, manuals and brochures in the field of videoconferencing