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Ronald C. Hoffmann — 2 Patents

CECambridge Engineering: 2 patents #7 of 18Top 40%

Maryland Heights, MO: #97 of 213 inventorsTop 50%

Missouri: #8,863 of 23,789 inventorsTop 40%

Overall (All Time): #2,345,138 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4700688	Ventilating hood	James A. Searcy, Roger O. Zoellner	1987-10-20
4286572	Ventilating hood	James A. Searcy, Roger O. Zoellner	1981-09-01