RH

Richard B. Hartman

3M: 1 patents #327 of 1,069Top 35%
📍 Windom, MN: #31 of 248 inventorsTop 15%
🗺 Minnesota: #307 of 3,156 inventorsTop 10%
Overall (1997): #26,637 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5650060 Ionically conductive agent, system for cathodic protection of galvanically active metals, and method and apparatus for using same Haitao Huang, Timothy M. Dietz 1997-07-22
5603207 Crafts rope maker 1997-02-18