Douglas Mitchell Underwood

📍 Springfield, VA: #5 of 20 inventorsTop 25%

🗺 Virginia: #300 of 1,409 inventorsTop 25%

Overall (1997): #157,422 of 185,788Top 85%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

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