Donn K. Kauffman

UN Unknown: 2 patents #56 of 2,033Top 3%

📍 Daphne, AL: #1 of 2 inventorsTop 50%

🗺 Alabama: #30 of 439 inventorsTop 7%

Overall (1994): #35,190 of 165,921Top 25%

Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5368670	Method of making multi-walled pipes and storage tanks for toxic and corrosive fluids	—	1994-11-29
5308423	Method of making multi-walled pipes and storage tanks for toxic and corrosive fluids	—	1994-05-03