John R. Hagstrom

📍 Chicago, IL: #477 of 1,478 inventorsTop 35%

🗺 Illinois: #2,824 of 8,424 inventorsTop 35%

Overall (2017): #369,311 of 506,227Top 75%

Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9595246	Adjustable brass valve	—	2017-03-14