DC

Donald G. Colvin

UN Unknown: 1 patents #29,356 of 83,584Top 40%
WT Western Technology: 1 patents #4 of 6Top 70%
Overall (All Time): #2,225,509 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6218951 Safety circuit 2001-04-17
5471524 Toll call restrictor method and apparatus Peter Frederick Reynolds 1995-11-28