U.S. federal trademark · Serial No. 77536615
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
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