DG

David B. Grapes

WP W.W. Patterson: 1 patents #1 of 3Top 35%
📍 Pittsburgh, PA: #96 of 411 inventorsTop 25%
🗺 Pennsylvania: #1,491 of 5,394 inventorsTop 30%
Overall (2003): #242,437 of 273,478Top 90%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6572083 Winch with safe load release system Richard A. Topping, Jr., Russell J Mayhew 2003-06-03