DR

Derek Ringers

🗺 Maryland: #13,387 of 35,612 inventorsTop 40%
Overall (All Time): #2,215,796 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6415540 Firearm trigger lock — 2002-07-09
6272784 Firearm trigger lock — 2001-08-14