SD

Stephen R. Downs

YS Yale Security: 1 patents #2 of 7Top 30%
📍 Matthews, NC: #4 of 19 inventorsTop 25%
🗺 North Carolina: #217 of 1,241 inventorsTop 20%
Overall (1989): #55,683 of 140,708Top 40%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4870400 Electronic door lock key re-sequencing function Charles Anderson 1989-09-26