3 trademarks were found for owners matching the name Chang, Jeng-Chung.
#Classstatus
1 S:78325161
M:CALIFONRIA LABS PROFESSIONAL AUDIO USA

O:Chang, Jeng-Chung
9 Dead
2 S:78325166
M:VOLCANO CAR AUDIO SYSTEM

O:Chang, Jeng-Chung
9 Dead
3 S:78322567
M:MARTIN ROLAND
O:Chang, Jeng-Chung
9 Dead
Trademark Alertz updated from USPTO on 2030-01-24