JH

John W. Van Horn

DS Duncan Industries Parking Control Systems: 1 patents #1 of 2Top 50%
📍 Clive, IA: #1 of 4 inventorsTop 25%
🗺 Iowa: #89 of 549 inventorsTop 20%
Overall (1989): #92,391 of 140,708Top 70%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4880406 Meter handle mechanism Clyde T. Johnson 1989-11-14