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Chien-Chien Chung

US Umax Data Systems: 1 patents #55 of 119Top 50%
Overall (All Time): #3,664,242 of 4,157,543Top 90%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5970262 Spring-free type focusing and defocusing mechanism for a digital camera Kou-Lung Tseng, Wei-Hsin Hwang, Chao-Soon Chen, SHIH-MIN LO, Jang-Yan Hung 1999-10-19