Douglas J. Buch

📍 Greenfield, WI: #8 of 19 inventorsTop 45%

🗺 Wisconsin: #1,685 of 4,845 inventorsTop 35%

Overall (2020): #488,919 of 565,922Top 90%

Patents 2020

Issued Patents 2020

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
10640929	Ground water filtration system	—	2020-05-05