RJ

Robert H. Johns

AL Allegheny Ludlum: 2 patents #1 of 10Top 10%
📍 Huntingdon Valley, PA: #4 of 15 inventorsTop 30%
🗺 Pennsylvania: #313 of 3,759 inventorsTop 9%
Overall (1989): #17,116 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4858327 Apparatus for determining an edge profile of a metallic workpiece — 1989-08-22
4821285 Thermocouple selection switch — 1989-04-11