Inventor
ZAHRAY WALTER PAUL
US5 patents
⚠️ This page may combine multiple inventors who share the name “ZAHRAY WALTER PAUL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AT & T CORP
4 patentsUS6252943B1Jun 26, 2001
Telephone network having dual gateway interconnection architecture for handling emergency services
AT & T CORP100 citations92
US6148071ANov 14, 2000
Method and apparatus for providing calling features independent of the numbering plan
AT & T CORP12 citations72
US5905791AMay 18, 1999
Method and apparatus for providing combined communication services including local service and toll service
AT & T CORP11 citations67
US6804344B1Oct 12, 2004
Telecommunication network having a VPN inter-connection to foreign exchange service
AT & T CORP6 citations55