DC

Darryl W. Courtney

📍 Arlington, VA: #1,032 of 1,838 inventorsTop 60%
🗺 Virginia: #18,729 of 34,511 inventorsTop 55%
Overall (All Time): #3,866,795 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4981134 Filtering face mask with inhalation/exhalation check valves — 1991-01-01