74469313
Dec 13, 1993
Aug 12, 1997
combinations of electrical devices, namely, infrared signaling transmitters and receivers, two way monitoring voice audio transmitters and receivers for signaling a nurse or other care giver or personnel or for detecting the presence of an article of equipment in one of a number of locations in a hospital or rehabilitation facility, and computerized data records and computer printers, respectively, for recording and reporting such signaling and such detecting
Electrical and Scientific Apparatus