77327552
Nov 12, 2007
Audiovisual system for suspending a video projector and associated audiovisual components from a ceiling tile grid with an enclosed audiovisual system consisting of an audiovisual switcher, amplifier, and receiver for sending video, audio, and control signals over unshielded twisted pair cables, and audiovisual components, namely, projector mount, projector mounting pole, transmitters for sending video, audio, and control signals over unshielded twisted pair cables, audiovisual connector plates, speakers, and electronic and digital control panels
Electrical and Scientific Apparatus