DH

Donald H. Heyden

📍 Inverness, IL: #68 of 100 inventorsTop 70%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #4,067,959 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4324138 Method of and apparatus and system for determining temperature conditions Bayard C. Davis 1982-04-13