U.S. federal trademark · Serial No. 73521338
NON-RESIDENTIAL TELEPHONE EQUIPMENT - NAMELY, KEY TELEPHONE SETS, KEY SERVICE UNITS, POWER SUPPLIES, INTERCOM AND DOOR ANSWERING BOXES, DIRECT STATION SELECTION CONSOLES, SPEAKERPHONES, AND PARTS THEREOF; AND KEY TELEPHONE SYSTEMS COMPRISING OF SOME OR ALL OF THE FOREGOING ITEMS OF NON-RESIDENTIAL TELEPHONE EQUIPMENT
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