John T. Underberg

📍 Fairfield, IA: #63 of 108 inventorsTop 60%

🗺 Iowa: #8,735 of 15,303 inventorsTop 60%

Overall (All Time): #3,904,130 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D308241	Exchangeable fishing sinker	—	1990-05-29