William J. Kroptavich

UN Unknown: 1 patents #29,356 of 83,584Top 40%

📍 Duryea, PA: #9 of 12 inventorsTop 75%

🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%

Overall (All Time): #3,864,366 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D331252	Guitar body	—	1992-11-24