DR

David L. Ringgenberg

MA Maytag: 1 patents #333 of 601Top 60%
📍 Newton, IA: #77 of 130 inventorsTop 60%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #3,654,979 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5927836 Top cover fastener Joel L. Herr, Troy A. Johnson 1999-07-27