Leo L. Roberts

HC Hughes Tool Company: 1 patents #83 of 224Top 40%

📍 Claremore, OK: #64 of 228 inventorsTop 30%

🗺 Oklahoma: #4,502 of 12,736 inventorsTop 40%

Overall (All Time): #2,360,278 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4483660	Submersible pump impeller locking method	—	1984-11-20
4275938	Tandem thrust bearing	—	1981-06-30