printed circuit boards having a sound capability

Electronic System for Transforming Monoaural Television or Video Recorder Audio Signals into Stereophonic Sound Comprising an Audio Signal Splitter, Stereo Amplifier and Speakers

PROVIDING TELEVISION STATIONS WITH CUSTOM ARRANGED AND RECORDED BACKGROUND MUSIC FOR USE ON THEIR PROGRAMS

SERVICES OF BROADCAST ADVERTISING AND PROGRAM SYNDICATION; WRITING AND PRODUCING RADIO PROGRAMS

Electronic System for Transforming Monaural Television or Video Recorder Audio Signals into Stereographic Sound Comprising an Audio Signal Splitter, Stereo Amplifier and Speakers