PF

Patrick H. Fischer

AT AT&T: 1 patents #10,626 of 18,772Top 60%
Overall (All Time): #3,591,091 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6275578 Method and apparatus for providing back-up, in-band signaling in a communications network Nicholas D. De Trana, Craig L. DeCaluwe, Hossein Eslambolchi, Joseph Kohler 2001-08-14