VJ

Virgil Johnson, Jr.

LI Lexmark International: 20 patents #108 of 1,615Top 7%
HI Hydronautics, Incorporated: 5 patents #1 of 6Top 20%
📍 Gaithersburg, MD: #51 of 1,746 inventorsTop 3%
🗺 Maryland: #730 of 35,612 inventorsTop 3%
Overall (All Time): #144,430 of 4,157,543Top 4%
27
Patents All Time

Issued Patents All Time

Showing 26–27 of 27 patents

Patent #TitleCo-InventorsDate
4389071 Enhancing liquid jet erosion William T. Lindenmuth 1983-06-21
4262757 Cavitating liquid jet assisted drill bit and method for deep-hole drilling T. R. Sundaram, Andrew F. Conn 1981-04-21