CB

Calvin C. Blackman

📍 Vermilion, OH: #2 of 7 inventorsTop 30%
🗺 Ohio: #715 of 3,574 inventorsTop 25%
Overall (1989): #127,657 of 140,708Top 95%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4867675 Method and apparatus for quickly purging atmosphere gas from bell furnace — 1989-09-19