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Shun-Fan Cheng

QI Qisda: 1 patents #193 of 490Top 40%
Overall (All Time): #3,371,197 of 4,157,543Top 85%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7457407 Mobile phone and battery-fixing device thereof Chin-Kai Sun 2008-11-25