U.S. federal trademark · Serial No. 73630095 · Reg. No. 1507882
SECURITY SYSTEMS FOR COMPUTERS--NAMELY, A PRINTED CIRCUIT BOARD HAVING ELECTRONIC CIRCUITRY THEREON, A CARD READER CAPABLE OF READING AN ENCODED CARD, AND SOFTWARE, ALL OF WHICH ENABLE THE COMPUTER TO RESPOND ONLY TO A PRESELECTED ENCODED CARD AND RECEIPT OF AN INPUT SIGNAL CONTAINING A PRESELECTED IDENTIFICATION CODE
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