RF

Ralph Douglas Fredrickson

📍 Saint Cloud, MN: #90 of 217 inventorsTop 45%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #3,538,068 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6357549 Guide rail climbing lifting platform and method Donald D. Brennan, Brent R. Leisening, Carl W. Diedrich, George Burkhart 2002-03-19