CG

Calvin E. Grubbs

TI Thomas Industries: 3 patents #14 of 97Top 15%
Overall (All Time): #1,672,486 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4723098 Electronic ballast circuit for fluorescent lamps — 1988-02-02
4477748 Solid state ballast — 1984-10-16
4435749 High frequency inverter fault protection system — 1984-03-06