Audio-video receivers; Sound and video recording and playback machines; Microphones; Telephone headsets; Wireless television set for providing video conferencing and telephone service over the Internet; Plastic rotating attachment affixed to a telephone or other electronic cord to prevent tangling; Desk or car mounted units incorporating a loudspeaker to allow a telephone handset to be used hands-free; Contingency response communication system designed to provide radio interoperability, strea...