WIRELESS VOICE COMMUNICATION SYSTEMS COMPRISING NETWORK CONTROLLERS, TRANSMITTERS/RECEIVIERS, MOBILE COMMUNICATION TAGS, TRANSMITTERS FOR TRANSMITTING THE LOCATION AND IDENTITY OF THE HOLDER THEREOF; WIRELESS VOICE COMMUNICATION SYSTEMS FOR USE IN UNDERGROUND MINES AND CONFINED SPACES, NAMELY NETWORK CONTROLLERS, TEXT MESSAGING MOBILE COMMUNICATORS, NAMELY TRANSMITTER/RECEIVERS, MOBILE COMMUNICATION TAGS, TRANSMITTERS FOR TRANSMITTING THE LOCATION AND IDENTITY OF THE HOLDER THEREOF, WIRELESS ...

Mobile computing and operating platforms consisting of data transceivers, wireless networks and gateways for collection and management of data

WIRELESS VOICE COMMUNICATION SYSTEM FOR USE IN UNDERGROUND MINES AND CONFINED SPACES, NAMELY NETWORK CONTROLLERS, TEXT MESSAGING MOBILE COMMUNICATORS, NAMELY IN THE NATURE OF TRANSMITTER/RECEIVERS, MOBILE COMMUNICATION TAGS, NAMELY TRANSMITTERS FOR TRANSMITTING THE LOCATION AND IDENTITY OF THE HOLDER THEREOF, WIRELESS ACCESS POINT DEVICES