Ralph Ingerson, Jr.

RH Rri Holdings: 1 patents #3 of 5Top 60%

📍 Bel Air, MD: #279 of 482 inventorsTop 60%

🗺 Maryland: #19,431 of 35,612 inventorsTop 55%

Overall (All Time): #3,802,165 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5330351	Trefoil construction for rotary kilns	George E. Ransom, Jr., George E. Ransom, III	1994-07-19