RH

Roger A. Haugen

HY Hypro: 1 patents #13 of 22Top 60%
Overall (All Time): #3,866,326 of 4,157,543Top 95%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5174383 Apparatus and method for controlling the introduction of chemical foamant into water stream in fire-fighting equipment Michael D. O'Dougherty 1992-12-29