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Chang-Hui Chen

Overall (2011): #108,749 of 364,097Top 30%
2
Patents 2011

Issued Patents 2011

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7960633 Anti-rotation counterhoop-fixing structure for drum 2011-06-14
7932452 Extended low frequency resonant structure for drumhead 2011-04-26