DH

Dallas E. Heft

🗺 Ohio: #715 of 3,574 inventorsTop 25%
Overall (1989): #34,586 of 140,708Top 25%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4840474 Furnace viewing system Donald A. Carignan 1989-06-20