WK

Wade D. Kretman

3M: 1 patents #455 of 1,204Top 40%
📍 Windom, MN: #21 of 286 inventorsTop 8%
🗺 Minnesota: #643 of 4,860 inventorsTop 15%
Overall (2003): #37,364 of 273,478Top 15%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6581286 Method of making tool to produce optical film Alan B. Campbell, Sanford Cobb, Jr., Marvin J. Niezgocki, Timothy L. Hoopman 2003-06-24
6560026 Optical film with variable angle prisms Mark E. Gardiner, Sanford Cobb, Jr., Kenneth A. Epstein 2003-05-06