SY

Sing C. J. Yuen

AI Arco Industries: 3 patents #2 of 5Top 40%
📍 Sha Tin, CN: #2 of 17 inventorsTop 15%
Overall (1982): #3,169 of 81,411Top 4%
3
Patents 1982

Issued Patents 1982

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