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John Sund

DR D. B. Riley: 2 patents #1 of 4Top 25%
📍 Columbiaville, MI: #1 of 1 inventorsTop 100%
🗺 Michigan: #358 of 4,492 inventorsTop 8%
Overall (1997): #34,872 of 185,788Top 20%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5685240 Variable orifice plate for coal pipes Oliver G. Briggs, Jr. 1997-11-11
5593131 Variable orifice plate for coal pipes Oliver G. Briggs, Jr. 1997-01-14