Walter P. Zahray

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Matawan, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
System for processing a call with a TDM network and routing the cal...
- Patent number 8,611,360
- Issue date Dec 17, 2013
- AT&T Intellectual Property I, L.P.
- Daniel Sheinbein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telecommunication network having a VPN inter-connection to foreign...
- Patent number 6,804,344
- Issue date Oct 12, 2004
- AT&T Corp.
- Robert R. Marchiano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone network having dual gateway interconnection architecture...
- Patent number 6,252,943
- Issue date Jun 26, 2001
- AT&T Corp.
- Leticia Garcia Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for providing calling features independent of...
- Patent number 6,148,071
- Issue date Nov 14, 2000
- AT&T Corp.
- Albert Friedes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for providing combined communication services...
- Patent number 5,905,791
- Issue date May 18, 1999
- AT&T Corp.
- Anurag Goel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
International priority calling system with callback features
- Patent number 5,311,583
- Issue date May 10, 1994
- AT&T Bell Laboratories
- Albert Friedes
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM FOR PROCESSING A CALL WITH A TDM NETWORK AND ROUTING THE CAL...
- Publication number 20120155479
- Publication date Jun 21, 2012
- AT&T Intellectual Property I, L.P.
- Daniel Sheinbein
- H04 - ELECTRIC COMMUNICATION TECHNIQUE