DJ

David Johnson

📍 New Castle, PA: #2 of 9 inventorsTop 25%
🗺 Pennsylvania: #852 of 3,759 inventorsTop 25%
Overall (1989): #122,823 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4866870 Revolver speed loader — 1989-09-19