DH

David R. Hopper

EN Ensr: 2 patents #3 of 6Top 50%
Overall (All Time): #2,306,535 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5082012 Simplified apparatus for decontaminating electrical apparatus contaminated with PCBs Michael J. Massey, Mark N. DeDecker 1992-01-21
4814021 Apparatus and method for reclassifying electrical apparatus contaminated with PCB Michael J. Massey 1989-03-21