RG

Roderich W. Graff

📍 Ann Arbor, MI: #57 of 244 inventorsTop 25%
🗺 Michigan: #694 of 3,452 inventorsTop 25%
Overall (1989): #63,279 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4870760 Method and an apparatus for drying bulk material, preferably of plastic granules 1989-10-03