DH

David A. Hampel

EG Esco Group: 1 patents #2 of 9Top 25%
📍 Vancouver, WA: #5 of 21 inventorsTop 25%
🗺 Washington: #103 of 744 inventorsTop 15%
Overall (1982): #70,676 of 81,411Top 90%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4335532 Excavating tooth Frederick C. Hahn, William R. Barber, Jr. 1982-06-22