JH

John R. Hagstrom

📍 Chicago, IL: #299 of 948 inventorsTop 35%
🗺 Illinois: #2,058 of 6,921 inventorsTop 30%
Overall (2011): #261,978 of 364,097Top 75%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7884273 Method and use of warm-up instructional video for wind instrument — 2011-02-08