John H. Steffens

TO The Standard Oil: 1 patents #291 of 601Top 50%

📍 Lyndhurst, OH: #142 of 225 inventorsTop 65%

🗺 Ohio: #42,657 of 73,341 inventorsTop 60%

Overall (All Time): #4,124,043 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4234409	Process for the production of lubricating blend stocks	Richard D. Schieman	1980-11-18