Kenn A. Schaefer

📍 Hartford, WI: #124 of 200 inventorsTop 65%

🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%

Overall (All Time): #3,923,248 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

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