U.S. federal trademark · Serial No. 74477250 · Reg. No. 1981443
Integrated Services Digital Network (ISDN) devices, namely telephone sets comprised of an ISDN interface telephone device that connects to an ISDN telephone network and provides voice, video and/or data service to the user; terminal adapters, namely ISDN terminal devices that adapt non-ISDN data equipment to ISDN network; and videophones
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.