HARMONIX by Harmonix Music Systems, Inc. (Track this)
Intl: (009) Electrical and scientific apparatus US: 021; 023; 026; 036; 038 Filing date: 23-Apr-1998 Serial number: 75473404
ELECTRO-HARMONIX by New Sensor Corp. (Track this)
Intl: (009) Electrical and scientific apparatus US: 021; 036 Filing date: 23-Apr-1991 Serial number: 74160099