DM

Douglas Matthew Mergen

📍 Deadwood, SD: #7 of 10 inventorsTop 70%
🗺 South Dakota: #1,077 of 2,308 inventorsTop 50%
Overall (All Time): #3,720,550 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5649790 Friction rock stabilizer and method for insertion Dean Allen Vilhauer 1997-07-22