P
PatentIndex
Search
Landscape
Sign in
Inventor
KANCIANIC EUGENE M
US
2 patents
Patents
2 patents
US6252943B1
Jun 26, 2001
Telephone network having dual gateway interconnection architecture for handling emergency services
AT & T CORP
100 citations
92
US5910979A
Jun 8, 1999
Method for billing local communication services provided by an interexchange communication network
AT & T CORP
57 citations
91