2 trademarks were found for owners matching the name Chang, Ching-Chao.
#Classstatus
1 S:85720442
M:COALSTAR
O:Chang, Ching-Chao
1 Dead
2 S:75918229
M:EZ-2000 THE PC TO COUNT ON

O:CHANG, CHING CHAO
9 Dead
Trademark Alertz updated from USPTO on 2030-01-24