DR

Dennis P. Rolph

DS Diversified Fastening Systems: 2 patents #1 of 9Top 15%
📍 Charles City, IA: #10 of 49 inventorsTop 25%
🗺 Iowa: #4,661 of 15,303 inventorsTop 35%
Overall (All Time): #1,637,196 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5743061 Wall anchor 1998-04-28
5711043 Set tool and cap Trevor J. Crawford 1998-01-27
5363987 Newspaper vending unit Danny E. Crawford, Gene A. Hall, Dennis A. Jendro, Danny L. Nelson, Paul D. Elst +5 more 1994-11-15