JF

James N. Friedman

CA Carrier: 2 patents #900 of 2,507Top 40%
Overall (All Time): #2,339,389 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4782815 Liquid-backed gas-fired heating system Chester D. Ripka 1988-11-08
4570612 Induced draft submerged burner Chester D. Ripka, Thomas E. Drago 1986-02-18