RR

Ronald Leslie Richards

DE Desoto: 2 patents #50 of 130Top 40%
📍 Oak Park, IL: #180 of 677 inventorsTop 30%
🗺 Illinois: #21,447 of 84,256 inventorsTop 30%
Overall (All Time): #1,272,118 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6371743 Rotary internal combustion engines 2002-04-16
6071098 Rotary internal combustion engines 2000-06-06
4451603 Abrasion-resistant coatings Kazys Sekmakas 1984-05-29
4450251 Thermosetting aqueous varnish compositions Edwin A. Zychowski 1984-05-22