RH

Robert C. Holzapfel

IU Iowa State University: 1 patents #700 of 1,643Top 45%
📍 Arlington Heights, IL: #823 of 1,285 inventorsTop 65%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,871,621 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4998394 Masonry wall structure and method of making the same Michael P. Mottet, Thomas W. Riggle 1991-03-12