DR

Douglas Raum

ZT Zoom Telephonics: 1 patents #9 of 16Top 60%
Overall (All Time): #3,210,221 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8194651 Method and apparatus for user authentication Dean N. Panagopoulos, Tader Chang, William Hume Vance 2012-06-05