DR

David O. Richards

📍 Wigton, CO: #1 of 1 inventorsTop 100%
Overall (1982): #15,165 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4358370 Backwashable filter Dennis E. Jameson 1982-11-09
4358371 Backwashable filter Dennis E. Jameson 1982-11-09