JB

Jack Brett

DU Duro-Test: 1 patents #13 of 20Top 65%
Overall (All Time): #4,094,822 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4283653 High emissivity filament for energy conserving incandescent lamps with infrared radiation returning envelopes — 1981-08-11