RJ

Robert W. Johnson

📍 Ottawa, CA: #150 of 791 inventorsTop 20%
Overall (2017): #111,710 of 506,227Top 25%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9765541 Method and apparatus to fill and fire proof holes in concrete floors Gerald R. Gray 2017-09-19
9553517 Hybrid energy storage system and methods 2017-01-24