U.S. federal trademark · Serial No. 77536618 · Reg. No. 3762146
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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