Douglas C. Pierson

📍 Slayton, MN: #2 of 6 inventorsTop 35%

🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%

Overall (All Time): #1,528,099 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
8667769	Applying liquid biodegrading agents to guided harvest residue	—	2014-03-11
7814737	Methods and apparatus for guiding harvest residue	—	2010-10-19
7658058	Methods and apparatus for guiding harvest residue	—	2010-02-09