U.S. federal trademark · Serial No. 87957741 · Reg. No. 6003287
Acoustic couplers; Adding machines; Batteries, electric; Chargers for electric batteries; Frequency meters; Headsets for telephones; Microscopes; Rotating lights; Transmitters of electronic signals; Voltage stabilizing power supply
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.