RJ

Robert F. Johnston

BH Bell And Howell: 2 patents #76 of 293Top 30%
PI Ppg Industries: 1 patents #662 of 1,216Top 55%
📍 Wildwood, IL: #27 of 63 inventorsTop 45%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,675,807 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4668272 Support and drive system for rotating liquefaction vessel George C. Newcamp, John F. McConnell, Paul R. Ross, Jr., Richard A. Caripolti, John Peter 1987-05-26
4459475 Automatic calibration for D.C. transducers John R. Flint 1984-07-10
4448364 Reversible ribbon drive Richard Frystak, John R. Flint 1984-05-15