U.S. federal trademark · Serial No. 73518774 · Reg. No. 1355129
TELEPHONE ANSWERING SERVICE SYSTEMS, COMPRISING, LINE CONCENTRATOR(S) OR DIRECT INWARD DIAL IDENTIFICATION UNIT(S), DATA BASE, OPERATOR COMMAND KEYPAD OR KEYBOARD, AND OPERATOR VIDEO TERMINAL; EQUIPMENT FOR USE WITH TELEPHONE ANSWERING SERVICE SYSTEMS, COMPRISING, LINE CONCENTRATOR(S) AND DIRECT INWARD DIAL IDENTIFICATION UNIT(S); SERIAL COMMUNICATIONS CONTROLLERS; MEMORY BOARDS; INTERFACES FOR DISK DRIVES WITH COMMUNICATIONS CHANNELS; VIDEO CONTROLLERS PROVIDING PROGRAMMABLE MULTIPLE CHANNELS OF VIDEO DISPLAY AND COMPUTER CHASSIS
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