U.S. federal trademark · Serial No. 73174468 · Reg. No. 1137593
AUDIO FILTER SYSTEMS-, namely, EQUALIZERS; AUDIO AMPLIFIERS; AUDIO FILTERS; [ AUDIO PREAMPS; ] AUDIO SWITCHERS [ ; AND AUDIO TEST EQUIPMENT-, namely, VOLTAGE METERS, LOADS, AND INTER-MODULATION DISTORTION ANALYZERS ]
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.