SY

Sing C. J. Yuen

AI Arco Industries: 3 patents #3 of 16Top 20%
📍 Sha Tin, CN: #514 of 2,424 inventorsTop 25%
Overall (All Time): #1,684,746 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4341034 Toy washing machine Kwok W. Tsui 1982-07-27
4340373 Spelling machine Bruce M. D'Andrade, Kwok W. Tsui 1982-07-20
4338741 Toy dryer Kwok W. Tsui 1982-07-13