DH

Dick L. Holmberg

📍 Whitehall, MI: #1 of 5 inventorsTop 20%
🗺 Michigan: #694 of 3,452 inventorsTop 25%
Overall (1989): #120,338 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4889446 Erosion control foundation mat and method — 1989-12-26