RA

Richard Armstrong

📍 O'Fallon, IL: #1 of 4 inventorsTop 25%
🗺 Illinois: #371 of 4,484 inventorsTop 9%
Overall (1994): #22,256 of 165,921Top 15%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5369991 Automative diagnostic testing apparatus 1994-12-06
5293666 Delayed action door holder 1994-03-15