DH

David Hellmers

Overall (All Time): #1,433,980 of 4,157,543Top 35%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11017969 Self-deactivating tethered interconnection system for power outlet Thomas C. Zinchuk, Romica Popa 2021-05-25
8183481 Mechanical interlock of a lever operated receptacle with a shaft operated switch Tom Zinchuk 2012-05-22
7462792 Power transmission safety system Michael Hellmers, Denis Crawford 2008-12-09