DK

Douglas Ketchum

Overall (All Time): #2,296,625 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5343115 Efficient large area multi-channel flat fluorescent lamp Munisamy Anandan 1994-08-30
4978888 Thick-film integrated flat fluorescent lamp Munisamy Anandan 1990-12-18