U.S. federal trademark · Serial No. 73454225 · Reg. No. 1347311
Key Telephone Systems Comprising Telephone Equipment-Namely, Key Telephone Station Sets, Key Service Units, Direct Station Selection Consoles, Power Supplies, Private Automatic Branch Exchanges, Switching Units, and Parts Thereof
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.