DH

David A. Houghton

CI Cisco: 1 patents #7,901 of 13,007Top 65%
Overall (All Time): #3,239,409 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7881712 Generating and signaling tones in a communications network Chengsheng Luo, Anantha R. Mekala 2011-02-01