Karl S. Schroeder

📍 Greenfield, WI: #1 of 11 inventorsTop 10%

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

Overall (1989): #89,793 of 140,708Top 65%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4840407	Sheet music binder	—	1989-06-20