74621998
Jan 17, 1995
Nov 12, 1996
combinations of electrical devices, namely infrared signaling transmitters and receivers, two way monitoring voice audio transmitters and receivers, computerized data records, and printers for signaling a nurse or other care giver or personnel or for detecting the presence of a nurse or other care giver or personnel or an article of equipment in one of a number of locations in a hospital or rehabilitation facility and for reporting and recording detected locations at one or more monitoring positions
Electrical and Scientific Apparatus