DM

David E. Maxwell

SE Sun Electric: 2 patents #8 of 46Top 20%
Overall (All Time): #2,374,058 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D257331 Engine exhaust emission analyzer James R. Shaffer, Lee Radtke 1980-10-14
D257013 Engine exhaust emission analyzer James R. Shaffer, Lee Radtke 1980-09-23