DC

David E. Chupka

BC Black Clawson Company: 2 patents #1 of 7Top 15%
📍 Middletown, OH: #3 of 18 inventorsTop 20%
🗺 Ohio: #248 of 3,574 inventorsTop 7%
Overall (1989): #29,682 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4885090 Screen plates Carl C. Landegger 1989-12-05
4795560 Screen plates Carl C. Landegger 1989-01-03