U.S. federal trademark · Serial No. 78064447 · Reg. No. 2625110
TELEPHONE ACCESS CONTROL SYSTEMS, COMPRISING A TELEPHONE HANDSET AND KEYPAD, AN INTERCOM UNIT, COMPUTER HARDWARE AND OPERATIONAL SOFTWARE, AND ELECTRONIC CIRCUITRY FOR ESTABLISHING COMMUNICATION BETWEEN THE INTERCOM UNIT AND A REMOTE TELEPHONE, USED TO RESTRICT ENTRY TO CONTROLLED ENVIRONMENTS SUCH AS RESIDENTIAL, COMMERCIAL, AND INDUSTRIAL PROPERTIES
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