JR

James E. Roelofs

JW Jwi: 1 patents #29 of 59Top 50%
📍 Zeeland, MI: #201 of 350 inventorsTop 60%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #3,781,435 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5456022 Batch-type sludge drier David P. McLeod, David J. Spyker, Daniel De Haan, Greg De Haan, Wesley G. Koops 1995-10-10