MG

Marvin M. Graham

RC Robertshaw Controls: 2 patents #114 of 302Top 40%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,364,786 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4422844 Snap acting thermostatic fluid valve and electrical switch coupled thereto Jay R. Katchka 1983-12-27
4285662 Gas burner control mechanism Jay R. Katchka 1981-08-25