Kenn A. Schaefer

📍 Hartford, WI: #2 of 7 inventorsTop 30%

🗺 Wisconsin: #325 of 1,637 inventorsTop 20%

Overall (1989): #87,813 of 140,708Top 65%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4813343	Ringless piston construction	—	1989-03-21