JB

John M. Burkhart

EG Esco Group: 1 patents #2 of 9Top 25%
📍 Portland, OR: #13 of 101 inventorsTop 15%
🗺 Oregon: #40 of 384 inventorsTop 15%
Overall (1982): #53,751 of 81,411Top 70%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4317300 Earth working tooth with wear cap Robert K. Emrich, William H. Prather 1982-03-02