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Shui-Tan Tzeng

Overall (All Time): #2,309,362 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5114348 Tutorial device for observing lunar phase — 1992-05-19
4747780 Multi-function globe with its related planets — 1988-05-31

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