JM

John Y. Ma

📍 Glenview, IL: #11 of 39 inventorsTop 30%
🗺 Illinois: #566 of 2,749 inventorsTop 25%
Overall (1982): #52,314 of 81,411Top 65%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4352209 Up-down frequency converter for cable T.V. — 1982-09-28