Chang, Jeng-Chung Trademarks
MARTIN ROLAND

MARTIN ROLAND

Professional Karaoke Mixer, Professional Karaoke Amplifier and Professional Karaoke Speaker; Professional Karaoke Mixer,…
Owned by: Chang, Jeng-Chung
Serial Number: 78322567

CALIFONRIA LABS PROFESSIONAL AUDIO USA

CALIFONRIA LABS PROFESSIONAL AUDIO USA

Electronic audio and/or audio-visual stereo processor apparatus for use in car and/or at home; professional and amateur…
Owned by: Chang, Jeng-Chung
Serial Number: 78325161

VOLCANO CAR AUDIO SYSTEM

VOLCANO CAR AUDIO SYSTEM

electronic audio and/or audio-visual stereo processor apparatus for use in car and/or at home; Professional and amateur…
Owned by: Chang, Jeng-Chung
Serial Number: 78325166