Daniel J. Vitkavage has been granted 14 US patents while listed as an inventor at AT&T. The first was granted in 1991 and the most recent in June 2004. Daniel J. Vitkavage ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Daniel J. Vitkavage in Emmaus, PA, US.