76360252
Jan 16, 2002
Apr 17, 2007
LOCAL-AREA, WIRELESS PAGING SYSTEM COMPRISING A PLURALITY OF PAGING UNITS WORN BY INDIVIDUALS IN THE VICINITY, A CENTRAL PROGRAMMABLE SYSTEM-MANAGE COMPUTER, AND A PLURALITY OF TRANSCEIVERS WHICH, WHEN ACTIVATED, SEND A SERVICE REQUEST OR A MONITORING COMMUNICATION TO ONE OR MORE OF THE PAGING UNITS
Electrical and Scientific Apparatus