RJ

Roger Johns

SI Smith International: 1 patents #8 of 29Top 30%
📍 Tuttle, OK: #1 of 3 inventorsTop 35%
🗺 Oklahoma: #177 of 727 inventorsTop 25%
Overall (1994): #75,258 of 165,921Top 50%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5305837 Air percussion drilling assembly for directional drilling applications Michael S. Oliver, Huy D. Bui 1994-04-26