Ralph L. Royse

📍 Flemingsburg, KY: #3 of 5 inventorsTop 60%

🗺 Kentucky: #6,410 of 11,577 inventorsTop 60%

Overall (All Time): #3,916,320 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4974556	Internal combustion engine	—	1990-12-04