DR

Dennis M. Riddleberger

📍 Portsmouth, VA: #1 of 4 inventorsTop 25%
🗺 Virginia: #121 of 685 inventorsTop 20%
Overall (1982): #69,456 of 81,411Top 90%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4342336 Double-acting inflatable seal J. Glenn Satterthwaite 1982-08-03