7821 Radio, television and closed circuit television (0) Systems for transmitting and receiving broadcast, cable, internet, radio and television signals and for transmitting the signals by cable and wireless systems to terminals where the sound and vision signals can be displayed; and for similarly transmitting prerecorded radio and television material 7822 Projection facilities (0) Facilities associated with the projection of visual images, both still & moving, with & without sound, including front and rear projection screens, remote control and intercommunication systems between speakers and those controlling the projection