John M. Marshall

📍 Crown Point, IN: #7 of 16 inventorsTop 45%

🗺 Indiana: #304 of 1,469 inventorsTop 25%

Overall (1989): #94,151 of 140,708Top 70%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4848138	Window gas monitor	—	1989-07-18