WC

William J. H. Chang

📍 Rocky River, OH: #108 of 263 inventorsTop 45%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,339,013 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4776194 Pipe mill — 1988-10-11
4286451 Forming leveller — 1981-09-01