O. Paul Trentham

📍 Joplin, MO: #71 of 249 inventorsTop 30%

🗺 Missouri: #6,609 of 23,789 inventorsTop 30%

Overall (All Time): #1,483,754 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
10094303	Rotary valve engine	—	2018-10-09
6651605	Rotary valve for piston engine	—	2003-11-25
6578538	Rotary valve for piston engine	—	2003-06-17