Douglas Bening

📍 Okawville, IL: #3 of 7 inventorsTop 45%

🗺 Illinois: #48,934 of 84,256 inventorsTop 60%

Overall (All Time): #3,575,479 of 4,157,543Top 90%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6202319	Grain dryer heat exchanger	—	2001-03-20