U.S. federal trademark · Serial No. 73454228 · Reg. No. 1419775
Key Telephone Systems Comprising Telephone Equipment-Namely, Key Telephone Sets, Key Telephone Sets with Called-Party Monitor Circuit, Key Telephone Sets with Busy Lamp Field, Key Service Units, Power Supplies, Intercom and Door Answering Boxes, Door Chime Boxes, Direct Station Selection Consoles, Applique Boxes, Speakerphones, Flash Switch Assemblies and Parts Thereof
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.