DH

Donald E. Hatfield

GE: 2 patents #13,562 of 36,430Top 40%
📍 Mattoon, IL: #16 of 42 inventorsTop 40%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,224,305 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6203392 Single ended quartz projection lamp Bernard W. Rachel 2001-03-20
6011353 Design and cooling of single ended quartz projection lamps Bernard W. Rachel 2000-01-04