RF

Ralph Douglas Fredrickson

📍 Saint Cloud, MN: #2 of 10 inventorsTop 20%
🗺 Minnesota: #1,346 of 4,549 inventorsTop 30%
Overall (2002): #135,969 of 266,432Top 55%
1
Patents 2002

Issued Patents 2002

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