David Johnstone

📍 Council Bluffs, IA: #3 of 6 inventorsTop 50%

🗺 Iowa: #434 of 1,466 inventorsTop 30%

Overall (2016): #426,469 of 481,213Top 90%

Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9302721	Track driven sub-base assembly	—	2016-04-05