DK

Dennis A. Kalgren

OD Overhead Door: 2 patents #55 of 173Top 35%
📍 Richardson, TX: #982 of 2,156 inventorsTop 50%
🗺 Texas: #52,441 of 125,132 inventorsTop 45%
Overall (All Time): #2,267,903 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5632317 Roll-up door Leroy G. Krupke, Douglas R. Fuller, Anthony J. Shelton 1997-05-27
5601133 Roll-up door Leroy G. Krupke, Douglas R. Fuller, Anthony J. Shelton 1997-02-11