RH

Ronald C. Hoffmann

CE Cambridge Engineering: 2 patents #7 of 18Top 40%
Overall (All Time): #2,345,138 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4700688 Ventilating hood James A. Searcy, Roger O. Zoellner 1987-10-20
4286572 Ventilating hood James A. Searcy, Roger O. Zoellner 1981-09-01