JT

John R. Toporek

📍 Cedar Lake, IN: #20 of 31 inventorsTop 65%
🗺 Indiana: #19,404 of 33,936 inventorsTop 60%
Overall (All Time): #4,080,209 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4364514 Heat-recovering apparatus for furnaces — 1982-12-21