SJ

Spencer Dale Johnson

UC Union Tank Car: 1 patents #1 of 3Top 35%
📍 Chicago, IL: #577 of 1,801 inventorsTop 35%
🗺 Illinois: #3,003 of 9,120 inventorsTop 35%
Overall (2019): #265,934 of 560,194Top 50%
1
Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10464580 Railroad tank car manway assembly Dan Schmidt, Gary C. Walter 2019-11-05