HH

Howard A. Hayden

📍 Troy, MI: #1,616 of 2,712 inventorsTop 60%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #4,066,997 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4321098 Continuous hardening of high speed steel — 1982-03-23