MJ

Marshall E. Johns

PE Petrolite: 1 patents #81 of 143Top 60%
📍 Creve Coeur, MO: #157 of 236 inventorsTop 70%
🗺 Missouri: #13,067 of 23,789 inventorsTop 55%
Overall (All Time): #4,007,182 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4631138 Corrosion inhibitors Keith D. Strassner, Thomas G. Braga 1986-12-23