Evan R. Johnson

UE US Dept of Energy: 1 patents #1,355 of 5,099Top 30%

📍 San Diego, CA: #15,630 of 23,606 inventorsTop 70%

🗺 California: #247,236 of 386,348 inventorsTop 65%

Overall (All Time): #4,112,481 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4204558	Valve assembly having remotely replaceable bearings	David E. Tanner	1980-05-27