Douglas Mitchell Underwood

📍 Springfield, VA: #305 of 553 inventorsTop 60%

🗺 Virginia: #18,729 of 34,511 inventorsTop 55%

Overall (All Time): #3,727,439 of 4,157,543Top 90%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5678819	Three-dimensional strategy game	—	1997-10-21